Popularity in the United States (by decade)
Numbers
| Bertha (feminine) | Bertha (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | - | - | - | - | ||
| 2010 | - | - | - | - | ||
| 2000 | - | - | - | - | ||
| 1990 | #1261 | 0.007 | - | - | ||
| 1980 | #945 | 0.009 | - | - | ||
| 1970 | #614 | 0.017 | - | - | ||
| 1960 | #395 | 0.031 | - | - | ||
| 1950 | #246 | 0.057 | - | - | ||
| 1940 | #157 | 0.109 | - | - | ||
| 1930 | #116 | 0.192 | #1744 | 0.002 | ||
| 1920 | #70 | 0.311 | #1852 | 0.002 | ||
| 1910 | #43 | 0.471 | #1749 | 0.002 | ||
| 1900 | #20 | 0.781 | #740 | 0.008 | ||
| 1890 | #12 | 1.068 | #682 | 0.008 | ||
| 1880 | #8 | 1.305 | #655 | 0.007 | ||
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