

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 5 | 3 | 70 | 0 | 79 | 157 |
| 1970 | 2 | 1 | 13 | 0 | 5 | 21 |
| 1971 | 2 | 1 | 7 | 0 | 14 | 24 |
| 1972 | 3 | 0 | 10 | 0 | 7 | 20 |
| 1973 | 2 | 0 | 2 | 0 | 7 | 11 |
| 1974 | 1 | 1 | 5 | 0 | 7 | 14 |
| 1975 | 3 | 0 | 3 | 0 | 11 | 17 |
| 1976 | 2 | 1 | 6 | 0 | 13 | 22 |
| 1977 | 3 | 0 | 11 | 0 | 17 | 31 |
| 1978 | 12 | 2 | 40 | 0 | 15 | 69 |
| 1979 | 18 | 1 | 39 | 0 | 20 | 78 |
| 1980 | 18 | 5 | 45 | 0 | 21 | 89 |
| 1981 | 22 | 4 | 29 | 0 | 27 | 82 |
| 1982 | 30 | 11 | 71 | 0 | 43 | 155 |
| 1983 | 30 | 12 | 40 | 0 | 29 | 111 |
| 1984 | 31 | 17 | 61 | 0 | 25 | 134 |
| 1985 | 43 | 13 | 140 | 0 | 51 | 247 |
| 1986 | 40 | 19 | 72 | 0 | 36 | 167 |
| 1987 | 47 | 17 | 97 | 0 | 52 | 213 |
| 1988 | 64 | 18 | 56 | 0 | 51 | 189 |
| 1989 | 65 | 20 | 92 | 1 | 59 | 237 |
| 1990 | 87 | 22 | 173 | 1 | 65 | 348 |
| 1991 | 113 | 27 | 249 | 2 | 63 | 454 |
| 1992 | 110 | 33 | 386 | 0 | 51 | 580 |
| 1993 | 123 | 35 | 627 | 1 | 125 | 911 |
| 1994 | 149 | 47 | 314 | 0 | 114 | 624 |
| 1995 | 161 | 45 | 252 | 1 | 98 | 557 |
| 1996 | 147 | 45 | 201 | 0 | 60 | 453 |
| 1997 | 177 | 51 | 197 | 0 | 86 | 511 |
| 1998 | 197 | 58 | 175 | 0 | 82 | 512 |
| 1999 | 222 | 46 | 166 | 0 | 95 | 529 |
| 2000 | 235 | 52 | 269 | 1 | 127 | 684 |
| 2001 | 247 | 47 | 290 | 0 | 125 | 709 |
| 2002 | 253 | 40 | 256 | 1 | 113 | 663 |
| 2003 | 259 | 41 | 287 | 1 | 152 | 740 |
| 2004 | 299 | 57 | 229 | 0 | 92 | 677 |
| 2005 | 299 | 57 | 264 | 0 | 118 | 738 |
| 2006 | 378 | 59 | 329 | 2 | 203 | 971 |
| 2007 | 351 | 39 | 343 | 5 | 137 | 875 |
| 2008 | 339 | 49 | 404 | 12 | 115 | 919 |
| 2009 | 399 | 50 | 376 | 0 | 155 | 980 |
| 2010 | 395 | 56 | 418 | 2 | 98 | 969 |
| 2011 | 381 | 56 | 514 | 0 | 121 | 1072 |
| 2012 | 391 | 53 | 657 | 8 | 225 | 1334 |
| 2013 | 380 | 51 | 981 | 6 | 362 | 1780 |
| 2014 | 452 | 54 | 986 | 1 | 391 | 1884 |
| 2015 | 315 | 34 | 1283 | 1 | 569 | 2202 |
| 2016 | 254 | 20 | 1509 | 2 | 670 | 2455 |
| 2017 | 286 | 42 | 1838 | 5 | 767 | 2938 |
| 2018 | 203 | 21 | 2186 | 2 | 857 | 3269 |
| 2019 | 164 | 27 | 2450 | 3 | 799 | 3443 |
| 2020 | 196 | 19 | 2379 | 1 | 873 | 3468 |
| 2021 | 245 | 15 | 2628 | 1 | 942 | 3831 |
| 2022 | 160 | 19 | 2738 | 12 | 936 | 3865 |
| 2023 | 257 | 8 | 2813 | 0 | 967 | 4045 |
| 2024 | 297 | 17 | 3208 | 0 | 1059 | 4581 |
| 2025 | 111 | 4 | 169 | 6 | 42 | 332 |
| 2026 | 5 | 1 | 5 | 0 | 60 | 71 |
| Total | 9480 | 1543 | 33458 | 78 | 12503 | 57062 |