← All namesBilly
Raw counts
| Year | Count |
|---|
| 1910 | 23 |
| 1911 | 10 |
| 1912 | 31 |
| 1913 | 73 |
| 1914 | 116 |
| 1915 | 12 |
| 1915 | 292 |
| 1916 | 411 |
| 1917 | 613 |
| 1918 | 24 |
| 1918 | 861 |
| 1919 | 20 |
| 1919 | 1,116 |
| 1920 | 36 |
| 1920 | 1,591 |
| 1921 | 38 |
| 1921 | 2,117 |
| 1922 | 44 |
| 1922 | 2,631 |
| 1923 | 51 |
| 1923 | 3,248 |
| 1924 | 65 |
| 1924 | 4,242 |
| 1925 | 95 |
| 1925 | 5,508 |
| 1926 | 128 |
| 1926 | 7,030 |
| 1927 | 155 |
| 1927 | 8,604 |
| 1928 | 176 |
| 1928 | 9,541 |
| 1929 | 171 |
| 1929 | 10,628 |
| 1930 | 206 |
| 1930 | 13,259 |
| 1931 | 205 |
| 1931 | 13,552 |
| 1932 | 168 |
| 1932 | 9,855 |
| 1933 | 121 |
| 1933 | 10,389 |
| 1934 | 95 |
| 1934 | 11,095 |
| 1935 | 126 |
| 1935 | 10,996 |
| 1936 | 65 |
| 1936 | 10,393 |
| 1937 | 80 |
| 1937 | 10,563 |
| 1938 | 48 |
| 1938 | 9,834 |
| 1939 | 28 |
| 1939 | 8,828 |
| 1940 | 30 |
| 1940 | 10,684 |
| 1941 | 27 |
| 1941 | 10,710 |
| 1942 | 26 |
| 1942 | 9,671 |
| 1943 | 19 |
| 1943 | 9,092 |
| 1944 | 13 |
| 1944 | 8,288 |
| 1945 | 6 |
| 1945 | 7,873 |
| 1946 | 10 |
| 1946 | 8,680 |
| 1947 | 34 |
| 1947 | 8,647 |
| 1948 | 5 |
| 1948 | 9,806 |
| 1949 | 7 |
| 1949 | 7,819 |
| 1950 | 10 |
| 1950 | 7,666 |
| 1951 | 12 |
| 1951 | 6,685 |
| 1952 | 22 |
| 1952 | 6,541 |
| 1953 | 16 |
| 1953 | 7,933 |
| 1954 | 12 |
| 1954 | 7,073 |
| 1955 | 7 |
| 1955 | 9,011 |
| 1956 | 8 |
| 1956 | 9,219 |
| 1957 | 10 |
| 1957 | 8,538 |
| 1958 | 17 |
| 1958 | 8,649 |
| 1959 | 25 |
| 1959 | 8,611 |
| 1960 | 8,263 |
| 1961 | 11 |
| 1961 | 7,693 |
| 1962 | 6 |
| 1962 | 7,897 |
| 1963 | 7,603 |
| 1964 | 12 |
| 1964 | 7,204 |
| 1965 | 5 |
| 1965 | 6,783 |
| 1966 | 6,073 |
| 1967 | 5,737 |
| 1968 | 5 |
| 1968 | 5,374 |
| 1969 | 22 |
| 1969 | 5,203 |
| 1970 | 40 |
| 1970 | 5,116 |
| 1971 | 33 |
| 1971 | 4,919 |
| 1972 | 20 |
| 1972 | 4,339 |
| 1973 | 13 |
| 1973 | 4,308 |
| 1974 | 29 |
| 1974 | 4,290 |
| 1975 | 39 |
| 1975 | 3,782 |
| 1976 | 23 |
| 1976 | 3,858 |
| 1977 | 20 |
| 1977 | 4,008 |
| 1978 | 29 |
| 1978 | 3,425 |
| 1979 | 11 |
| 1979 | 3,716 |
| 1980 | 4,061 |
| 1981 | 18 |
| 1981 | 3,453 |
| 1982 | 7 |
| 1982 | 3,012 |
| 1983 | 6 |
| 1983 | 2,449 |
| 1984 | 2,194 |
| 1985 | 18 |
| 1985 | 2,001 |
| 1986 | 2,104 |
| 1987 | 10 |
| 1987 | 1,845 |
| 1988 | 1,658 |
| 1989 | 1,653 |
| 1990 | 1,523 |
| 1991 | 1,424 |
| 1992 | 1,568 |
| 1993 | 1,594 |
| 1994 | 1,314 |
| 1995 | 1,193 |
| 1996 | 975 |
| 1997 | 904 |
| 1998 | 870 |
| 1999 | 808 |
| 2000 | 712 |
| 2001 | 694 |
| 2002 | 545 |
| 2003 | 625 |
| 2004 | 5 |
| 2004 | 599 |
| 2005 | 651 |
| 2006 | 638 |
| 2007 | 530 |
| 2008 | 473 |
| 2009 | 449 |
| 2010 | 390 |
| 2011 | 371 |
| 2012 | 397 |
| 2013 | 371 |
| 2014 | 278 |
| 2015 | 329 |
| 2016 | 314 |
| 2017 | 291 |
| 2018 | 268 |
| 2019 | 248 |
| 2020 | 175 |
| 2021 | 215 |
| 2022 | 191 |
| 2023 | 151 |
| 2024 | 184 |