| Year |
Event |
Status |
Participants |
NOCs |
| 1956 |
100 metres Butterfly, Women |
Olympic |
12 |
8 |
| 1960 |
100 metres Butterfly, Women |
Olympic |
25 |
16 |
| 1964 |
100 metres Butterfly, Women |
Olympic |
31 |
16 |
| 1968 |
100 metres Butterfly, Women |
Olympic |
28 |
21 |
| 1972 |
100 metres Butterfly, Women |
Olympic |
30 |
21 |
| 1976 |
100 metres Butterfly, Women |
Olympic |
39 |
23 |
| 1980 |
100 metres Butterfly, Women |
Olympic |
24 |
17 |
| 1984 |
100 metres Butterfly, Women |
Olympic |
35 |
23 |
| 1988 |
100 metres Butterfly, Women |
Olympic |
40 |
28 |
| 1992 |
100 metres Butterfly, Women |
Olympic |
49 |
34 |
| 1996 |
100 metres Butterfly, Women |
Olympic |
42 |
35 |
| 2000 |
100 metres Butterfly, Women |
Olympic |
49 |
39 |
| 2004 |
100 metres Butterfly, Women |
Olympic |
38 |
30 |
| 2008 |
100 metres Butterfly, Women |
Olympic |
49 |
38 |
| 2012 |
100 metres Butterfly, Women |
Olympic |
42 |
36 |
| 2016 |
100 metres Butterfly, Women |
Olympic |
45 |
35 |
| 2020 |
100 metres Butterfly, Women |
Olympic |
33 |
27 |
| 2024 |
100 metres Butterfly, Women |
Olympic |
32 |
26 |