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EMBRYOCENTER, year by year

Everything the Spanish National Activity Registry publishes about EMBRYOCENTER between 2014 and 2023: 10 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
2014257
2015306
2016388
2017422
2018369
2019165
2020322
2021299
2022282
2023322
Transfers recorded per year — Egg donation
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Transfers recorded per year — Egg donation
YearValue
201484
201542
201671
201785
201838

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
201472 – 100%78.9 – 100%
201577.2 – 96.7%30.2 – 75.1%
201625.2 – 51.7%47.8 – 85.5%
201733.1 – 57.5%28.5 – 51%
201840.7 – 74.4%49.6 – 74.6%
201950.6 – 100%30.4 – 86.2%
2020100 – 100%38.2 – 65.8%
2021—9.6 – 70.4%
2022—0.2 – 46%
2023—41.6 – 66.6%
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
201438.8 – 57.5%37.3 – 67.5%
201524.6 – 42.1%51.1 – 72.3%
201641.6 – 63.2%29.8 – 44.3%
201734.6 – 55.3%37.2 – 54.7%
201843.5 – 64.9%39 – 58.1%
201941.4 – 67.7%31.7 – 59.9%
202028.4 – 67.6%31.9 – 48.1%
202143.3 – 72.2%42.2 – 59.4%
202250.6 – 85.2%42.2 – 59.3%
202330.5 – 58.9%31.7 – 48.3%
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
201411.1 – 33.3%0 – 40.2%
20157.8 – 33.2%1.6 – 58.4%
20166.5 – 32.4%14.5 – 52.2%
20176.5 – 37.9%25.7 – 54.3%
20180.4 – 14.4%8.6 – 35.8%
20190.8 – 20.3%0 – 86.7%
20203 – 21%16.5 – 41.2%
20217.2 – 30.9%10.3 – 28.6%
20227.6 – 32.4%13.2 – 33.1%
202315.5 – 45.6%7 – 30.2%
Egg donation · Under 35
  • Fresh embryos
  • Frozen embryos
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Egg donation · Under 35
YearFresh embryosFrozen embryos
2014100 – 100%100 – 100%
2015100 – 100%—
2016100 – 100%—
2017100 – 100%—
2018100 – 100%—
Egg donation · Between 35 and 39
  • Fresh embryos
  • Frozen embryos
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Egg donation · Between 35 and 39
YearFresh embryosFrozen embryos
201444.9 – 88.4%40 – 93.3%
201544.9 – 100%—
2016100 – 100%0 – 100%
2017100 – 100%12 – 76.9%
201825.1 – 84%13.3 – 100%
Egg donation · Over 40
  • Fresh embryos
  • Frozen embryos
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Egg donation · Over 40
YearFresh embryosFrozen embryos
201430.7 – 60.2%6.2 – 79.5%
201535.8 – 70.4%1 – 99%
201634 – 59.3%0 – 67.4%
201737.7 – 60.9%—
201823.3 – 70.8%0 – 82.9%
AIH — artificial insemination (partner’s sperm) · Under 40
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AIH — artificial insemination (partner’s sperm) · Under 40
YearUnder 40
20148.3 – 31.7%
AIH — artificial insemination (partner’s sperm) · Under 35
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AIH — artificial insemination (partner’s sperm) · Under 35
YearUnder 35
201510.1 – 27%
201610.1 – 25.3%
20173.7 – 32%
20184.7 – 29.6%
20190 – 44.8%
20200 – 49.4%
20210 – 100%
20220 – 86.7%
20230 – 31.6%
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
201513.3 – 100%
20160 – 82.9%
20176.6 – 28.9%
20187 – 30.2%
20196.1 – 30.7%
20203 – 28.2%
20211 – 53.6%
20220 – 30.5%
20233.4 – 43.7%
AID — artificial insemination (donor sperm) · Under 40
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AID — artificial insemination (donor sperm) · Under 40
YearUnder 40
20143.8 – 46.2%
AID — artificial insemination (donor sperm) · Under 35
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AID — artificial insemination (donor sperm) · Under 35
YearUnder 35
20155.7 – 34.3%
20166.7 – 33.3%
20173 – 41.4%
20180 – 55%
20190 – 46.5%
20200 – 35.4%
2022100 – 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
20151 – 99%
20160 – 62%
20170 – 35.4%
20190 – 44.8%
20200 – 42.9%
20210 – 55%
20220 – 28.6%
20230 – 100%

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
2014Civte100-50034172 – 100%8.3 – 31.7%Registro Nacional de Actividad 2014-Registro SEF
2015EMBRYOCENTER100-50034877.2 – 96.7%10.1 – 27%Registro Nacional de Actividad 2015-Registro SEF
2016EMBRYOCENTER100-50045925.2 – 51.7%10.1 – 25.3%Registro Nacional de Actividad 2016-Registro SEF
2017EMBRYOCENTER100-50050733.1 – 57.5%3.7 – 32%Registro Nacional de Actividad 2017-Registro SEF
2018EMBRYOCENTER100-50040740.7 – 74.4%4.7 – 29.6%Registro Nacional de Actividad 2018-Registro SEF
2019EMBRYOCENTER100-50016550.6 – 100%0 – 44.8%Registro Nacional de Actividad 2019-Registro SEF
2020EMBRYOCENTER100-500322100 – 100%0 – 49.4%Registro Nacional de Actividad 2020-Registro SEF
2021EMBRYOCENTER100-500299No data0 – 100%Registro Nacional de Actividad 2021-Registro SEF
2022EMBRYOCENTER100-500282No data0 – 86.7%Registro Nacional de Actividad 2022-Registro SEF
2023EMBRYOCENTER100-500322No data0 – 31.6%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 EMBRYOCENTER profile

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