Popularity in the United States (by decade)
Numbers
| Bertie (masculine) | Bertie (feminine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | - | - | - | - | ||
| 2010 | - | - | - | - | ||
| 2000 | - | - | - | - | ||
| 1990 | - | - | - | - | ||
| 1980 | - | - | - | - | ||
| 1970 | - | - | - | - | ||
| 1960 | - | - | - | - | ||
| 1950 | - | - | #1584 | 0.002 | ||
| 1940 | - | - | #792 | 0.007 | ||
| 1930 | - | - | #488 | 0.017 | ||
| 1920 | #1804 | 0.002 | #401 | 0.023 | ||
| 1910 | #1577 | 0.002 | #338 | 0.031 | ||
| 1900 | #983 | 0.005 | #235 | 0.059 | ||
| 1890 | #725 | 0.007 | #205 | 0.071 | ||
| 1880 | #595 | 0.009 | #171 | 0.082 | ||
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