According to the Social Security Administration, my birth name Thomas, which was very popular in the first half of the 20th century, has become less popular over the last 30 years or so.

1900s: 12th most popular male baby name in the US
1910s: 11th
1920s: 11th
1930s: 9th
1940s: 8th
1950s: 8th
1960s: 9th
1970s: 21st
1980s: 25th
1990s: 27th

In fact, the name has steadily become less popular in every year since 1990.

1990: 26th
1991: 28th
1992: 28th
1993: 28th
1994: 28th
1995: 29th
1996: 29th
1997: 32nd
1998: 33rd
1999: 33rd
2000: 34th
2001: 34th
2002: 36th
2003: 36th