Popularity in the United States (by decade)

1890 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 2010 0.080% 0.064% 0.048% 0.032% 0.016% 1880 2020
         

Numbers

 Rex (masculine) 
 Year   Rank   Percent Used 
2020 #696 0.020
2010 #645 0.020
2000 #897 0.010
1990 #812 0.008
1980 #562 0.013
1970 #440 0.020
1960 #261 0.045
1950 #198 0.066
1940 #227 0.044
1930 #210 0.055
1920 #233 0.049
1910 #236 0.047
1900 #285 0.034
1890 #328 0.025
1880 #415 0.016