

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 3 | 9 | 21 | 0 | 0 | 33 |
| 1970 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1971 | 0 | 11 | 0 | 0 | 0 | 11 |
| 1972 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1973 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1974 | 0 | 2 | 2 | 0 | 0 | 4 |
| 1975 | 0 | 3 | 4 | 0 | 0 | 7 |
| 1976 | 0 | 3 | 3 | 0 | 0 | 6 |
| 1977 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1978 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1979 | 0 | 2 | 5 | 0 | 0 | 7 |
| 1980 | 1 | 0 | 3 | 0 | 0 | 4 |
| 1981 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1982 | 0 | 6 | 7 | 0 | 0 | 13 |
| 1983 | 0 | 2 | 4 | 0 | 0 | 6 |
| 1984 | 0 | 4 | 4 | 0 | 0 | 8 |
| 1985 | 1 | 6 | 3 | 0 | 0 | 10 |
| 1986 | 0 | 9 | 6 | 0 | 0 | 15 |
| 1987 | 1 | 7 | 12 | 0 | 0 | 20 |
| 1988 | 0 | 7 | 10 | 0 | 0 | 17 |
| 1989 | 1 | 8 | 19 | 0 | 0 | 28 |
| 1990 | 3 | 52 | 16 | 0 | 0 | 71 |
| 1991 | 3 | 27 | 15 | 0 | 0 | 45 |
| 1992 | 3 | 18 | 22 | 0 | 0 | 43 |
| 1993 | 2 | 133 | 23 | 0 | 0 | 158 |
| 1994 | 3 | 247 | 58 | 0 | 0 | 308 |
| 1995 | 3 | 208 | 33 | 0 | 0 | 244 |
| 1996 | 8 | 299 | 23 | 0 | 0 | 330 |
| 1997 | 5 | 533 | 44 | 0 | 0 | 582 |
| 1998 | 3 | 463 | 37 | 0 | 0 | 503 |
| 1999 | 3 | 342 | 30 | 0 | 0 | 375 |
| 2000 | 8 | 569 | 53 | 0 | 0 | 630 |
| 2001 | 9 | 886 | 40 | 0 | 0 | 935 |
| 2002 | 0 | 599 | 86 | 0 | 0 | 685 |
| 2003 | 2 | 1199 | 68 | 0 | 0 | 1269 |
| 2004 | 4 | 1294 | 70 | 0 | 0 | 1368 |
| 2005 | 2 | 764 | 114 | 0 | 0 | 880 |
| 2006 | 9 | 644 | 138 | 0 | 0 | 791 |
| 2007 | 2 | 642 | 170 | 0 | 0 | 814 |
| 2008 | 4 | 801 | 175 | 0 | 0 | 980 |
| 2009 | 5 | 418 | 219 | 0 | 0 | 642 |
| 2010 | 3 | 419 | 381 | 0 | 0 | 803 |
| 2011 | 2 | 206 | 372 | 0 | 0 | 580 |
| 2012 | 13 | 780 | 280 | 0 | 0 | 1073 |
| 2013 | 20 | 1000 | 278 | 0 | 0 | 1298 |
| 2014 | 17 | 962 | 347 | 0 | 0 | 1326 |
| 2015 | 18 | 1140 | 383 | 0 | 0 | 1541 |
| 2016 | 14 | 1184 | 426 | 0 | 0 | 1624 |
| 2017 | 20 | 1553 | 418 | 0 | 0 | 1991 |
| 2018 | 23 | 1617 | 566 | 0 | 0 | 2206 |
| 2019 | 24 | 1894 | 623 | 0 | 0 | 2541 |
| 2020 | 10 | 1814 | 797 | 0 | 0 | 2621 |
| 2021 | 9 | 1996 | 823 | 0 | 0 | 2828 |
| 2022 | 7 | 2145 | 1007 | 0 | 0 | 3159 |
| 2023 | 49 | 2834 | 439 | 0 | 0 | 3322 |
| 2024 | 43 | 2933 | 475 | 0 | 0 | 3451 |
| 2025 | 1 | 1 | 14 | 0 | 0 | 16 |
| Total | 361 | 32700 | 9184 | 0 | 0 | 42245 |