Starting date of congressional term Share of U.S. senators who are women
1965 2%
1967 1%
1969 1%
1971 1%
1973 0%
1975 0%
1977 0%
1979 1%
1981 2%
1983 2%
1985 2%
1987 2%
1989 2%
1991 2%
1993 6%
1995 9%
1997 9%
1999 9%
2001 12%
2003 14%
2005 14%
2007 16%
2009 17%
2011 17%
2013 20%
2015 20%
2017 21%
2019 25%

Source: Center for American Women and Politics, Rutgers University and U.S. House of Representatives.

Percentages are the share of female senators at the outset of each term of Congress.