*Excludes Observations that spanned multiple years
| B | b | t | W | w | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 11 | 7 | 21 | 0 | 38 | 77 |
| 1970 | 0 | 0 | 8 | 0 | 1 | 9 |
| 1971 | 0 | 4 | 2 | 0 | 4 | 10 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 1 | 5 | 0 | 2 | 8 |
| 1974 | 0 | 1 | 4 | 0 | 2 | 7 |
| 1975 | 1 | 31 | 5 | 0 | 3 | 40 |
| 1976 | 0 | 4 | 4 | 0 | 7 | 15 |
| 1977 | 0 | 1 | 22 | 0 | 4 | 27 |
| 1978 | 0 | 3 | 11 | 0 | 3 | 17 |
| 1979 | 0 | 9 | 22 | 0 | 4 | 35 |
| 1980 | 1 | 9 | 12 | 0 | 0 | 22 |
| 1981 | 0 | 2 | 8 | 0 | 8 | 18 |
| 1982 | 0 | 4 | 10 | 0 | 5 | 19 |
| 1983 | 0 | 3 | 12 | 0 | 1 | 16 |
| 1984 | 0 | 3 | 7 | 0 | 2 | 12 |
| 1985 | 0 | 4 | 9 | 0 | 1 | 14 |
| 1986 | 0 | 6 | 13 | 0 | 4 | 23 |
| 1987 | 0 | 1 | 28 | 0 | 7 | 36 |
| 1988 | 0 | 12 | 15 | 0 | 7 | 34 |
| 1989 | 0 | 12 | 27 | 0 | 11 | 50 |
| 1990 | 0 | 57 | 22 | 0 | 4 | 83 |
| 1991 | 1 | 39 | 27 | 0 | 5 | 72 |
| 1992 | 1 | 32 | 25 | 0 | 7 | 65 |
| 1993 | 7 | 159 | 36 | 0 | 2 | 204 |
| 1994 | 3 | 399 | 76 | 0 | 1 | 479 |
| 1995 | 11 | 615 | 57 | 0 | 3 | 686 |
| 1996 | 6 | 281 | 65 | 0 | 1 | 353 |
| 1997 | 7 | 1897 | 50 | 0 | 4 | 1958 |
| 1998 | 13 | 1405 | 75 | 0 | 5 | 1498 |
| 1999 | 1 | 1175 | 54 | 0 | 4 | 1234 |
| 2000 | 5 | 1617 | 49 | 1 | 13 | 1685 |
| 2001 | 2 | 1668 | 53 | 0 | 9 | 1732 |
| 2002 | 2 | 1952 | 162 | 0 | 2 | 2118 |
| 2003 | 7 | 2508 | 124 | 0 | 2 | 2641 |
| 2004 | 2 | 2787 | 160 | 0 | 5 | 2954 |
| 2005 | 4 | 1859 | 446 | 0 | 7 | 2316 |
| 2006 | 5 | 2323 | 458 | 0 | 4 | 2790 |
| 2007 | 3 | 2145 | 204 | 0 | 3 | 2355 |
| 2008 | 8 | 1232 | 309 | 0 | 3 | 1552 |
| 2009 | 6 | 1383 | 415 | 0 | 5 | 1809 |
| 2010 | 9 | 1790 | 498 | 0 | 1 | 2298 |
| 2011 | 2 | 1099 | 530 | 0 | 7 | 1638 |
| 2012 | 6 | 2193 | 764 | 0 | 12 | 2975 |
| 2013 | 7 | 1954 | 653 | 0 | 9 | 2623 |
| 2014 | 4 | 1842 | 488 | 0 | 4 | 2338 |
| 2015 | 4 | 1916 | 800 | 0 | 16 | 2736 |
| 2016 | 5 | 1966 | 995 | 0 | 23 | 2989 |
| 2017 | 13 | 2756 | 1370 | 0 | 10 | 4149 |
| 2018 | 10 | 2501 | 1072 | 0 | 8 | 3591 |
| 2019 | 11 | 2665 | 1214 | 0 | 13 | 3903 |
| 2020 | 5 | 2582 | 1673 | 0 | 14 | 4274 |
| 2021 | 2 | 2828 | 1460 | 0 | 28 | 4318 |
| 2022 | 4 | 2972 | 1254 | 0 | 6 | 4236 |
| 2023 | 0 | 10 | 51 | 0 | 0 | 61 |
| 2024 | 0 | 7 | 53 | 0 | 0 | 60 |
| Total | 189 | 54731 | 15988 | 1 | 354 | 71263 |