← All namesApril
Raw counts
| Year | Count |
|---|
| 1939 | 23 |
| 1940 | 49 |
| 1941 | 119 |
| 1942 | 200 |
| 1943 | 168 |
| 1944 | 129 |
| 1945 | 172 |
| 1946 | 438 |
| 1947 | 542 |
| 1948 | 398 |
| 1949 | 484 |
| 1950 | 451 |
| 1951 | 581 |
| 1952 | 1,053 |
| 1953 | 948 |
| 1954 | 1,036 |
| 1955 | 1,447 |
| 1956 | 1,455 |
| 1957 | 1,611 |
| 1958 | 1,628 |
| 1959 | 1,934 |
| 1960 | 2,477 |
| 1961 | 2,231 |
| 1962 | 2,187 |
| 1963 | 2,440 |
| 1964 | 3,056 |
| 1965 | 3,370 |
| 1966 | 3,943 |
| 1967 | 5,402 |
| 1968 | 4,522 |
| 1969 | 4,824 |
| 1970 | 5,678 |
| 1971 | 7,647 |
| 1972 | 7,600 |
| 1973 | 8,832 |
| 1974 | 10,266 |
| 1975 | 9,979 |
| 1976 | 9,498 |
| 1976 | 5 |
| 1977 | 9,847 |
| 1977 | 5 |
| 1978 | 12,233 |
| 1979 | 13,534 |
| 1979 | 5 |
| 1980 | 13,807 |
| 1981 | 13,582 |
| 1982 | 11,865 |
| 1982 | 10 |
| 1983 | 9,416 |
| 1983 | 6 |
| 1984 | 8,877 |
| 1985 | 8,039 |
| 1986 | 7,380 |
| 1987 | 6,936 |
| 1988 | 6,340 |
| 1989 | 6,350 |
| 1989 | 15 |
| 1990 | 4,752 |
| 1991 | 4,604 |
| 1992 | 3,360 |
| 1993 | 3,063 |
| 1994 | 2,633 |
| 1995 | 2,069 |
| 1996 | 1,908 |
| 1997 | 1,670 |
| 1998 | 1,775 |
| 1999 | 1,352 |
| 2000 | 1,162 |
| 2001 | 1,053 |
| 2002 | 1,006 |
| 2003 | 961 |
| 2004 | 1,328 |
| 2005 | 1,196 |
| 2006 | 1,026 |
| 2007 | 1,053 |
| 2008 | 943 |
| 2009 | 676 |
| 2010 | 642 |
| 2011 | 684 |
| 2012 | 759 |
| 2013 | 586 |
| 2014 | 571 |
| 2015 | 758 |
| 2016 | 846 |
| 2017 | 695 |
| 2018 | 537 |
| 2019 | 571 |
| 2020 | 566 |
| 2021 | 623 |
| 2022 | 607 |
| 2023 | 612 |
| 2024 | 607 |