Everything the Spanish National Activity Registry publishes about FERTTY between 2018 and 2023: 6 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 oocytesSee this chart’s data
Transfers recorded per year — IVF/ICSI with own oocytes
Year
Value
2018
188
2019
215
2020
246
2021
270
2022
157
2023
151
Transfers recorded per year — Egg donationSee this chart’s data
Transfers recorded per year — Egg donation
Year
Value
2018
26
2019
91
2020
145
2021
147
2022
98
2023
108
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
See this chart’s data
IVF/ICSI with own oocytes · Under 35
Year
Fresh embryos
Frozen embryos
2018
49.9 – 90.1%
27.4 – 68.2%
2019
21.5 – 67.4%
38.7 – 76.7%
2020
28.8 – 64.5%
61.2 – 86.6%
2021
23.6 – 57.6%
35.7 – 61%
2022
30.2 – 75.1%
51.6 – 77.8%
2023
28.1 – 78.6%
51.1 – 78.1%
IVF/ICSI with own oocytes · Between 35 and 39
Fresh embryos
Frozen embryos
See this chart’s data
IVF/ICSI with own oocytes · Between 35 and 39
Year
Fresh embryos
Frozen embryos
2018
31.9 – 58.7%
31.1 – 61.6%
2019
35.2 – 58.9%
38 – 66.2%
2020
25.2 – 51.7%
43.3 – 69.9%
2021
35.6 – 62.5%
41.9 – 65.4%
2022
23.3 – 61.3%
43.3 – 72.2%
2023
10.6 – 60.8%
35.4 – 61.1%
IVF/ICSI with own oocytes · Over 40
Fresh embryos
Frozen embryos
See this chart’s data
IVF/ICSI with own oocytes · Over 40
Year
Fresh embryos
Frozen embryos
2018
22.7 – 56.1%
0 – 33.9%
2019
14.1 – 44.7%
17.3 – 58.9%
2020
12.1 – 42.5%
10 – 40%
2021
13.7 – 50.3%
24.6 – 59.3%
2022
0 – 46.5%
19 – 81%
2023
0 – 86.7%
12 – 64.9%
Egg donation · Under 35
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Under 35
Year
Fresh embryos
Frozen embryos
2019
—
100 – 100%
2020
—
100 – 100%
2021
100 – 100%
100 – 100%
2022
13.3 – 100%
13.3 – 100%
2023
100 – 100%
32.6 – 100%
Egg donation · Between 35 and 39
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Between 35 and 39
Year
Fresh embryos
Frozen embryos
2018
100 – 100%
0 – 62%
2019
28.9 – 100%
23.1 – 88%
2020
38 – 100%
28.1 – 78.6%
2021
64.6 – 100%
30.4 – 86.2%
2022
0 – 86.7%
28.1 – 78.6%
2023
0 – 100%
50.5 – 99.5%
Egg donation · Over 40
Fresh embryos
Frozen embryos
See this chart’s data
Egg donation · Over 40
Year
Fresh embryos
Frozen embryos
2018
0 – 67.4%
26.7 – 80.9%
2019
22.2 – 59.3%
38 – 66.2%
2020
44.4 – 79.7%
48.7 – 69.1%
2021
49.8 – 83.5%
43.1 – 63.3%
2022
42 – 87.4%
43.3 – 69%
2023
53.5 – 100%
39.7 – 61.5%
AIH — artificial insemination (partner’s sperm) · Under 35See this chart’s data
AIH — artificial insemination (partner’s sperm) · Under 35
Year
Under 35
2020
3 – 41.4%
2021
0 – 11.7%
2022
0 – 37.8%
AIH — artificial insemination (partner’s sperm) · Between 35 and 39See this chart’s data
AIH — artificial insemination (partner’s sperm) · Between 35 and 39
Year
Between 35 and 39
2019
0 – 100%
2020
0.5 – 49.5%
2021
0 – 46.5%
2023
0 – 23.1%
AID — artificial insemination (donor sperm) · Under 35See this chart’s data
AID — artificial insemination (donor sperm) · Under 35
Year
Under 35
2018
41.6 – 98.4%
2019
1.3 – 27.2%
2020
19.8 – 50.5%
2021
18.7 – 43.1%
2022
0 – 29.3%
2023
3.4 – 43.7%
AID — artificial insemination (donor sperm) · Between 35 and 39See this chart’s data
AID — artificial insemination (donor sperm) · Between 35 and 39
Year
Between 35 and 39
2019
0 – 28.7%
2020
8.2 – 38.5%
2021
9.9 – 44%
2022
4.3 – 49%
2023
0.2 – 46%
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.
Year
Name in the registry
Cycles started
Transfers
Pregnancy per transfer (under 35)
Pregnancy per cycle (insemination)
Attribution
2018
FERTTY
100-500
214
49.9 – 90.1%
41.6 – 98.4%
Registro Nacional de Actividad 2018-Registro SEF
2019
FERTTY
100-500
306
21.5 – 67.4%
0 – 100%
Registro Nacional de Actividad 2019-Registro SEF
2020
FERTTY
100-500
391
28.8 – 64.5%
3 – 41.4%
Registro Nacional de Actividad 2020-Registro SEF
2021
FERTTY
100-500
417
23.6 – 57.6%
0 – 11.7%
Registro Nacional de Actividad 2021-Registro SEF
2022
FERTTY
100-500
255
30.2 – 75.1%
0 – 37.8%
Registro Nacional de Actividad 2022-Registro SEF
2023
FERTTY
100-500
259
28.1 – 78.6%
0 – 23.1%
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.
