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Instituto Para El Estudio De La Esterilidad, year by year

Everything the Spanish National Activity Registry publishes about Instituto Para El Estudio De La Esterilidad between 2009 and 2023: 15 years with data. Each year carries its own attribution, because each year is a separate publication of the registry.

Volume first

Activity comes before results on purpose: a high percentage over few cycles does not mean what the same percentage over many cycles means. The registry publishes cycles as bands and that is how we show them, never reduced to a single figure; transfers are an exact count.

Transfers recorded per year — IVF/ICSI with own oocytes
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Transfers recorded per year — IVF/ICSI with own oocytes
YearValue
200935
201022
201124
201226
201323
201462
201548
201673
201785
201883
201967
202084
202179
202260
202347
Transfers recorded per year — Egg donation
’09’10’11’12’13’14’1564’16’17’18’19’20’21’22’23
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Transfers recorded per year — Egg donation
YearValue
200910
20108
201110
201216
201313
201419
201543
201664
201737
201821
201913
20202

Results, year by year

Each band is the interval the registry published that year: the floor and the ceiling of the estimate, not a point. There is no line joining the years, and that is deliberate — joining the centres of successive intervals would assert a trend the data does not support.

IVF/ICSI with own oocytes · Under 35
  • Fresh embryos
  • Frozen embryos
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IVF/ICSI with own oocytes · Under 35
YearFresh embryosFrozen embryos
200914.1 – 55.9%14.1 – 55.9%
201025.1 – 84%33.5 – 90.8%
20110 – 49.4%0 – 49.4%
20120 – 0%0 – 71.1%
20130 – 55%0 – 55.2%
201419.4 – 68.1%9.6 – 70.4%
20150 – 67.4%7.9 – 64.8%
201644.1 – 94.3%0 – 62%
201725.1 – 84%17.1 – 100%
20180 – 62%15.2 – 58.5%
20190 – 86.7%0 – 35.4%
20200 – 62%30.2 – 75.1%
202110 – 90%15.2 – 58.5%
20224 – 71%10.6 – 60.8%
20230 – 86.7%0 – 55%
IVF/ICSI with own oocytes · Between 35 and 39
  • Fresh embryos
  • Frozen embryos
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IVF/ICSI with own oocytes · Between 35 and 39
YearFresh embryosFrozen embryos
20098.5 – 54%8.5 – 54%
20100 – 44.8%0 – 44.8%
201110.6 – 60.8%16.2 – 67.9%
20122.5 – 64.1%9.1 – 73.4%
20130 – 62%0 – 49.4%
201415.2 – 64.8%0 – 71.1%
20151.6 – 58.4%0 – 31.6%
201611.6 – 55.1%0 – 37.9%
201712.4 – 46.9%0 – 37.8%
20189.5 – 57.2%0 – 49.4%
20190.5 – 49.5%—
202013.8 – 69.6%3 – 41.4%
202119.1 – 73.3%1.6 – 58.4%
20220 – 46.5%0 – 28.6%
20230 – 67.4%19 – 81%
IVF/ICSI with own oocytes · Over 40
  • Fresh embryos
  • Frozen embryos
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IVF/ICSI with own oocytes · Over 40
YearFresh embryosFrozen embryos
20090 – 0%0 – 0%
201013.3 – 100%100 – 100%
20110 – 100%100 – 100%
20120 – 0%0 – 0%
20130 – 0%0 – 0%
20140 – 31.6%—
201516 – 74.9%0 – 86.7%
20161 – 53.6%0 – 35.4%
201711.6 – 55.1%0 – 24%
20183 – 41.4%0 – 30.5%
20190 – 40.2%0 – 40.2%
20206.7 – 60%0 – 18.1%
20210 – 32.6%0 – 17.1%
20220 – 40.2%0 – 40.2%
20230 – 40.2%0 – 40.2%
Egg donation · Under 35
  • Fresh embryos
  • Frozen embryos
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Egg donation · Under 35
YearFresh embryosFrozen embryos
20090 – 0%0 – 0%
20100 – 100%0 – 100%
20110 – 0%0 – 0%
2012100 – 100%100 – 100%
2013100 – 100%100 – 100%
2014100 – 100%—
2016100 – 100%100 – 100%
Egg donation · Between 35 and 39
  • Fresh embryos
  • Frozen embryos
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Egg donation · Between 35 and 39
YearFresh embryosFrozen embryos
20090 – 0%0 – 0%
201032.6 – 100%100 – 100%
2011100 – 100%100 – 100%
20120 – 86.7%0 – 86.7%
20130 – 0%0 – 0%
201413.3 – 100%—
20150 – 67.4%—
20169.6 – 70.4%—
20170 – 71.1%0 – 37.8%
20181 – 99%0 – 86.7%
2019—0 – 100%
Egg donation · Over 40
  • Fresh embryos
  • Frozen embryos
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Egg donation · Over 40
YearFresh embryosFrozen embryos
20090 – 0%0 – 0%
2010100 – 100%100 – 100%
20110 – 0%0 – 100%
20120 – 40.2%0 – 40.2%
20130 – 82.9%9.6 – 97.1%
20149.6 – 70.4%0 – 67.4%
201523.3 – 70.8%13.8 – 61.2%
20166 – 44%2.7 – 39.4%
201710 – 90%0.2 – 46%
20180 – 55.1%—
20190 – 67.4%0 – 62%
AIH — artificial insemination (partner’s sperm) · Under 40
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AIH — artificial insemination (partner’s sperm) · Under 40
YearUnder 40
20100 – 0%
20110 – 40.2%
20120 – 0%
20134.3 – 35.7%
20140 – 33.9%
AIH — artificial insemination (partner’s sperm) · Under 35
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AIH — artificial insemination (partner’s sperm) · Under 35
YearUnder 35
20150 – 35.4%
20160.2 – 46%
20170 – 25.6%
20180 – 40.2%
20190 – 17.1%
20200 – 23.1%
20210 – 24.3%
AIH — artificial insemination (partner’s sperm) · Between 35 and 39
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AIH — artificial insemination (partner’s sperm) · Between 35 and 39
YearBetween 35 and 39
20150 – 62%
20170 – 35%
20180 – 62%
20190 – 28.6%
20212.5 – 64.1%
AID — artificial insemination (donor sperm) · Under 40
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AID — artificial insemination (donor sperm) · Under 40
YearUnder 40
20100 – 0%
20110 – 49.4%
20120 – 49.4%
20131 – 99%
20140 – 33.9%
AID — artificial insemination (donor sperm) · Under 35
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AID — artificial insemination (donor sperm) · Under 35
YearUnder 35
20150 – 100%
20160 – 82.9%
20170 – 28.6%
201917.1 – 100%
AID — artificial insemination (donor sperm) · Between 35 and 39
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AID — artificial insemination (donor sperm) · Between 35 and 39
YearBetween 35 and 39
20150 – 67.4%
20161 – 53.6%
20174.3 – 49%
20180 – 82.9%
2019100 – 100%
20200 – 86.7%
20230 – 67.4%

Year-by-year table

The table is the exact and complete reading: everything in the charts, and more. Each row cites the wording the registry requires for that year.

YearName in the registryTransfersPregnancy per transfer (under 35)Pregnancy per cycle (insemination)Attribution
2009Instituto Para El Estudio De La Esterilidad4514.1 – 55.9%No dataRegistro Nacional de Actividad 2009-Registro SEF
2010Instituto Para El Estudio De La Esterilidad3025.1 – 84%0 – 0%Registro Nacional de Actividad 2010-Registro SEF
2011Instituto Para El Estudio De La Esterilidad340 – 49.4%0 – 40.2%Registro Nacional de Actividad 2011-Registro SEF
2012Instituto Para El Estudio De La Esterilidad420 – 0%0 – 0%Registro Nacional de Actividad 2012-Registro SEF
2013Instituto Para El Estudio De La Esterilidad360 – 55%4.3 – 35.7%Registro Nacional de Actividad 2013-Registro SEF
2014Instituto Para El Estudio De La Esterilidad8119.4 – 68.1%0 – 33.9%Registro Nacional de Actividad 2014-Registro SEF
2015Instituto Para El Estudio De La Esterilidad910 – 67.4%0 – 35.4%Registro Nacional de Actividad 2015-Registro SEF
2016Instituto Para El Estudio De La Esterilidad13744.1 – 94.3%0.2 – 46%Registro Nacional de Actividad 2016-Registro SEF
2017Instituto Para El Estudio De La Esterilidad12225.1 – 84%0 – 25.6%Registro Nacional de Actividad 2017-Registro SEF
2018Instituto Para El Estudio De La Esterilidad1040 – 62%0 – 40.2%Registro Nacional de Actividad 2018-Registro SEF
2019Instituto Para El Estudio De La Esterilidad800 – 86.7%0 – 17.1%Registro Nacional de Actividad 2019-Registro SEF
2020Instituto Para El Estudio De La Esterilidad860 – 62%0 – 23.1%Registro Nacional de Actividad 2020-Registro SEF
2021Instituto Para El Estudio De La Esterilidad7910 – 90%0 – 24.3%Registro Nacional de Actividad 2021-Registro SEF
2022Instituto Para El Estudio De La Esterilidad604 – 71%No dataRegistro Nacional de Actividad 2022-Registro SEF
2023Instituto Para El Estudio De La Esterilidad470 – 86.7%0 – 67.4%Registro Nacional de Actividad 2023-Registro SEF

Gaps in the series, and how to read them

The registry’s province-by-province census returns empty for 2009 and 2010, even though the individual profiles for those years do exist and have been recovered one by one. A centre missing from a given year means the registry publishes no profile for it that year — not that it closed.

The registry’s template changed schema in 2014 and again in 2015: up to 2013, cycles, implantation and transfers are published without separating fresh from frozen embryos, and insemination is published for a single age band (“under 40”). That is why some years carry fewer series than others: it is what the source published, not a missing figure.

And most important: a change from one year to the next is not, on its own, an improvement or a decline. The patient mix changes, selection criteria change and, at small volumes, chance changes too. Wide intervals are precisely the signal that the exact number cannot be trusted.

Official guide: how to interpret a centre’s data (PDF, in Spanish)

← Back to the Instituto Para El Estudio De La Esterilidad profile

Source: “Registro Nacional de Actividad 2023-Registro SEF” (Spanish National ART Activity Registry) — registrosef.com, retrieved 31 July 2026.