

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 4 | 0 | 28 | 0 | 46 | 78 |
| 1970 | 0 | 0 | 3 | 0 | 3 | 6 |
| 1971 | 0 | 0 | 4 | 0 | 5 | 9 |
| 1972 | 0 | 0 | 2 | 0 | 4 | 6 |
| 1973 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1974 | 0 | 0 | 7 | 0 | 6 | 13 |
| 1975 | 1 | 0 | 3 | 0 | 7 | 11 |
| 1976 | 0 | 0 | 7 | 0 | 7 | 14 |
| 1977 | 0 | 0 | 8 | 0 | 8 | 16 |
| 1978 | 0 | 0 | 8 | 0 | 6 | 14 |
| 1979 | 0 | 0 | 6 | 0 | 8 | 14 |
| 1980 | 0 | 0 | 7 | 0 | 8 | 15 |
| 1981 | 0 | 0 | 5 | 0 | 12 | 17 |
| 1982 | 0 | 0 | 4 | 0 | 14 | 18 |
| 1983 | 0 | 0 | 4 | 0 | 11 | 15 |
| 1984 | 0 | 0 | 6 | 0 | 13 | 19 |
| 1985 | 0 | 1 | 6 | 0 | 11 | 18 |
| 1986 | 0 | 3 | 13 | 0 | 10 | 26 |
| 1987 | 0 | 2 | 20 | 0 | 13 | 35 |
| 1988 | 0 | 2 | 16 | 0 | 17 | 35 |
| 1989 | 0 | 7 | 20 | 0 | 12 | 39 |
| 1990 | 0 | 22 | 26 | 0 | 13 | 61 |
| 1991 | 1 | 7 | 42 | 0 | 9 | 59 |
| 1992 | 0 | 6 | 20 | 1 | 9 | 36 |
| 1993 | 0 | 44 | 59 | 1 | 15 | 119 |
| 1994 | 2 | 98 | 93 | 0 | 22 | 215 |
| 1995 | 3 | 72 | 51 | 1 | 14 | 141 |
| 1996 | 2 | 80 | 69 | 0 | 12 | 163 |
| 1997 | 4 | 163 | 106 | 1 | 20 | 294 |
| 1998 | 4 | 240 | 62 | 0 | 19 | 325 |
| 1999 | 3 | 132 | 61 | 0 | 20 | 216 |
| 2000 | 4 | 191 | 79 | 0 | 27 | 301 |
| 2001 | 4 | 182 | 75 | 0 | 29 | 290 |
| 2002 | 3 | 219 | 134 | 0 | 18 | 374 |
| 2003 | 1 | 243 | 138 | 0 | 18 | 400 |
| 2004 | 1 | 284 | 110 | 0 | 22 | 417 |
| 2005 | 4 | 166 | 231 | 0 | 30 | 431 |
| 2006 | 4 | 221 | 215 | 0 | 28 | 468 |
| 2007 | 2 | 164 | 194 | 2 | 25 | 387 |
| 2008 | 1 | 45 | 359 | 8 | 23 | 436 |
| 2009 | 4 | 70 | 292 | 0 | 61 | 427 |
| 2010 | 2 | 31 | 331 | 0 | 47 | 411 |
| 2011 | 2 | 3 | 458 | 1 | 73 | 537 |
| 2012 | 9 | 27 | 643 | 14 | 123 | 816 |
| 2013 | 6 | 5 | 851 | 11 | 109 | 982 |
| 2014 | 7 | 49 | 940 | 1 | 124 | 1121 |
| 2015 | 4 | 13 | 1266 | 2 | 256 | 1541 |
| 2016 | 5 | 2 | 1452 | 1 | 284 | 1744 |
| 2017 | 12 | 13 | 1833 | 1 | 265 | 2124 |
| 2018 | 10 | 9 | 1779 | 5 | 284 | 2087 |
| 2019 | 18 | 12 | 2068 | 8 | 254 | 2360 |
| 2020 | 9 | 4 | 2413 | 1 | 330 | 2757 |
| 2021 | 2 | 8 | 2570 | 3 | 364 | 2947 |
| 2022 | 5 | 6 | 3025 | 1 | 405 | 3442 |
| 2023 | 13 | 9 | 2845 | 0 | 378 | 3245 |
| 2024 | 19 | 14 | 3114 | 0 | 434 | 3581 |
| 2025 | 0 | 10 | 21 | 0 | 3 | 34 |
| Total | 175 | 2879 | 28203 | 63 | 4392 | 35712 |