| Year |
Event |
Status |
Participants |
NOCs |
| 1924 |
100 metres Backstroke, Women |
Olympic |
10 |
5 |
| 1928 |
100 metres Backstroke, Women |
Olympic |
12 |
7 |
| 1932 |
100 metres Backstroke, Women |
Olympic |
12 |
7 |
| 1936 |
100 metres Backstroke, Women |
Olympic |
21 |
12 |
| 1948 |
100 metres Backstroke, Women |
Olympic |
24 |
16 |
| 1952 |
100 metres Backstroke, Women |
Olympic |
20 |
14 |
| 1956 |
100 metres Backstroke, Women |
Olympic |
23 |
14 |
| 1960 |
100 metres Backstroke, Women |
Olympic |
30 |
19 |
| 1964 |
100 metres Backstroke, Women |
Olympic |
31 |
17 |
| 1968 |
100 metres Backstroke, Women |
Olympic |
40 |
23 |
| 1972 |
100 metres Backstroke, Women |
Olympic |
37 |
21 |
| 1976 |
100 metres Backstroke, Women |
Olympic |
34 |
21 |
| 1980 |
100 metres Backstroke, Women |
Olympic |
26 |
18 |
| 1984 |
100 metres Backstroke, Women |
Olympic |
31 |
21 |
| 1988 |
100 metres Backstroke, Women |
Olympic |
41 |
30 |
| 1992 |
100 metres Backstroke, Women |
Olympic |
45 |
31 |
| 1996 |
100 metres Backstroke, Women |
Olympic |
36 |
30 |
| 2000 |
100 metres Backstroke, Women |
Olympic |
46 |
39 |
| 2004 |
100 metres Backstroke, Women |
Olympic |
42 |
35 |
| 2008 |
100 metres Backstroke, Women |
Olympic |
48 |
37 |
| 2012 |
100 metres Backstroke, Women |
Olympic |
45 |
38 |
| 2016 |
100 metres Backstroke, Women |
Olympic |
34 |
29 |
| 2020 |
100 metres Backstroke, Women |
Olympic |
41 |
34 |