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IMFER, year by year

Everything the Spanish National Activity Registry publishes about IMFER between 2011 and 2023: 9 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
’11’12’13196’14’15’16’17’18’19’20’21’22’23
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Transfers recorded per year — IVF/ICSI with own oocytes
YearValue
2011189
2012142
2014196
2015173
2016161
2017196
202162
202243
202369
Transfers recorded per year — Egg donation
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Transfers recorded per year — Egg donation
YearValue
201190
2012138
201492
201585
201659
201767
202115
202219
202334

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
201128.6 – 46%52.2 – 69.8%
201224.9 – 69.8%32.8 – 68%
201428.4 – 67.6%30.2 – 60.3%
201528.4 – 67.6%25 – 53.2%
201624.6 – 66.3%28 – 59.2%
201723.3 – 61.3%42.2 – 71.5%
202132.6 – 100%19.1 – 73.3%
20220 – 100%15.4 – 84.6%
20232.5 – 64.1%9.4 – 42.5%
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
201118.2 – 33.9%30.5 – 48%
201217.2 – 51.8%28 – 62%
201429.9 – 59%37 – 65%
201537.5 – 67%16.5 – 44%
201628.9 – 60.5%19.2 – 51.4%
201735.9 – 62.3%20.6 – 49.1%
20210 – 71.1%26.3 – 69%
20220 – 55%0 – 62%
20230 – 71.1%0 – 42.9%
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
20111.9 – 32.9%5.9 – 40.4%
20120 – 42.9%0 – 32.2%
20146 – 44%13.8 – 69.6%
2015—0 – 67.4%
20169.2 – 47.9%0 – 62%
201715.2 – 58.5%2.5 – 64.1%
20210 – 49.4%0 – 49.4%
20220 – 40.2%1 – 53.6%
20230 – 71.1%0 – 40.2%
Egg donation · Under 35
  • Fresh embryos
  • Frozen embryos
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Egg donation · Under 35
YearFresh embryosFrozen embryos
20110 – 62%38 – 100%
201216.9 – 68.8%33.6 – 82%
201453.5 – 100%—
20151 – 99%17.1 – 100%
201644.9 – 100%0 – 67.4%
20170 – 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
201137.1 – 73.3%79.4 – 100%
201235.2 – 84.8%61.7 – 100%
201447.8 – 95.1%21.4 – 71.9%
20151.6 – 58.4%29.6 – 90.4%
2016100 – 100%28.9 – 100%
201712 – 76.9%10 – 90%
2021100 – 100%—
20221 – 99%—
202313.3 – 100%0 – 55.1%
Egg donation · Over 40
  • Fresh embryos
  • Frozen embryos
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Egg donation · Over 40
YearFresh embryosFrozen embryos
201141.4 – 67.7%84.9 – 99.2%
201229.3 – 59%84.5 – 100%
201442.3 – 75.4%100 – 100%
201523.2 – 63.7%14.8 – 49.4%
201625.5 – 74.5%15.3 – 54.2%
201743.1 – 81.9%20.4 – 61.5%
20210 – 100%25.1 – 84%
202244.9 – 100%38 – 100%
20230 – 62%15.2 – 58.5%
AIH — artificial insemination (partner’s sperm) · Under 40
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AIH — artificial insemination (partner’s sperm) · Under 40
YearUnder 40
20120 – 29.3%
201413.8 – 69.6%
AIH — artificial insemination (partner’s sperm) · Under 35
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AIH — artificial insemination (partner’s sperm) · Under 35
YearUnder 35
20160 – 46.5%
20170 – 46.5%
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
20170 – 100%
AID — artificial insemination (donor sperm) · Under 40
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AID — artificial insemination (donor sperm) · Under 40
YearUnder 40
20123.7 – 32%
201413.2 – 53.5%
AID — artificial insemination (donor sperm) · Under 35
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AID — artificial insemination (donor sperm) · Under 35
YearUnder 35
201617.1 – 100%
20171.6 – 58.4%
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
20160 – 67.4%
20170 – 49.4%

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 registryCycles startedTransfersPregnancy per transfer (under 35)Pregnancy per cycle (insemination)Attribution
2011Instituto Murciano de Fertilidad (IMFER)100-50027928.6 – 46%No dataRegistro Nacional de Actividad 2011-Registro SEF
2012Instituto Murciano de Fertilidad (IMFER)No data28024.9 – 69.8%0 – 29.3%Registro Nacional de Actividad 2012-Registro SEF
2013No data
2014Instituto Murciano de Fertilidad (IMFER)100-50028828.4 – 67.6%13.8 – 69.6%Registro Nacional de Actividad 2014-Registro SEF
2015Instituto Murciano de Fertilidad (IMFER)100-50025828.4 – 67.6%No dataRegistro Nacional de Actividad 2015-Registro SEF
2016IMFER100-50022024.6 – 66.3%0 – 46.5%Registro Nacional de Actividad 2016-Registro SEF
2017IMFER100-50026323.3 – 61.3%0 – 46.5%Registro Nacional de Actividad 2017-Registro SEF
2018No data
2019No data
2020No data
2021IMFERNo data7732.6 – 100%No dataRegistro Nacional de Actividad 2021-Registro SEF
2022IMFERNo data620 – 100%No dataRegistro Nacional de Actividad 2022-Registro SEF
2023IMFERNo data1032.5 – 64.1%No dataRegistro 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 IMFER profile

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