Years
Calendar years in this release. 115 in this release; the 92 with 10 occurrences or more are listed.
| Year | Occurrences |
|---|---|
| 1982 | 3,593 |
| 1983 | 3,543 |
| 1984 | 3,432 |
| 1985 | 3,086 |
| 1986 | 2,864 |
| 1987 | 2,781 |
| 1988 | 2,491 |
| 1990 | 2,461 |
| 1991 | 2,400 |
| 1989 | 2,338 |
| 1992 | 2,294 |
| 1993 | 2,260 |
| 1995 | 2,248 |
| 1994 | 2,209 |
| 1996 | 2,132 |
| 1999 | 2,112 |
| 1998 | 2,098 |
| 1997 | 2,072 |
| 2000 | 2,065 |
| 2003 | 1,960 |
| 2001 | 1,919 |
| 2002 | 1,907 |
| 2008 | 1,899 |
| 2007 | 1,873 |
| 2005 | 1,864 |
| 2011 | 1,861 |
| 2012 | 1,844 |
| 2004 | 1,804 |
| 2010 | 1,800 |
| 2009 | 1,798 |
| 2016 | 1,677 |
| 2018 | 1,677 |
| 2006 | 1,676 |
| 2017 | 1,636 |
| 1974 | 1,631 |
| 2019 | 1,608 |
| 2015 | 1,585 |
| 1975 | 1,573 |
| 1973 | 1,548 |
| 2013 | 1,537 |
| 1971 | 1,524 |
| 1970 | 1,516 |
| 1969 | 1,502 |
| 2014 | 1,485 |
| 1972 | 1,468 |
| 1981 | 1,439 |
| 1968 | 1,435 |
| 1976 | 1,386 |
| 1978 | 1,339 |
| 1980 | 1,328 |
| 1967 | 1,311 |
| 2022 | 1,309 |
| 2020 | 1,294 |
| 1977 | 1,272 |
| 2021 | 1,257 |
| 2023 | 1,254 |
| 2024 | 1,247 |
| 2025 | 1,215 |
| 1979 | 1,211 |
| 1966 | 1,154 |
| 1965 | 926 |
| 1964 | 703 |
| 2026 | 541 |
| 1963 | 108 |
| 1962 | 98 |
| 1958 | 51 |
| 1960 | 47 |
| 1961 | 42 |
| 1946 | 40 |
| 1948 | 39 |
| 1959 | 39 |
| 1953 | 38 |
| 1957 | 38 |
| 1945 | 36 |
| 1944 | 35 |
| 1956 | 35 |
| 1949 | 33 |
| 1952 | 33 |
| 1947 | 30 |
| 1943 | 27 |
| 1951 | 27 |
| 1938 | 26 |
| 1954 | 25 |
| 1950 | 24 |
| 1955 | 22 |
| 1942 | 18 |
| 1940 | 14 |
| 1939 | 12 |
| 1941 | 12 |
| 1935 | 10 |
| 1936 | 10 |
| 1937 | 10 |