

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 33 | 0 | 169 | 203 |
| 1970 | 0 | 0 | 4 | 0 | 4 | 8 |
| 1971 | 0 | 0 | 1 | 0 | 10 | 11 |
| 1972 | 0 | 0 | 4 | 0 | 7 | 11 |
| 1973 | 0 | 0 | 5 | 0 | 8 | 13 |
| 1974 | 0 | 0 | 10 | 0 | 8 | 18 |
| 1975 | 0 | 2 | 8 | 0 | 10 | 20 |
| 1976 | 0 | 0 | 8 | 0 | 14 | 22 |
| 1977 | 0 | 1 | 11 | 0 | 15 | 27 |
| 1978 | 0 | 0 | 14 | 0 | 14 | 28 |
| 1979 | 1 | 0 | 22 | 0 | 19 | 42 |
| 1980 | 0 | 0 | 7 | 0 | 20 | 27 |
| 1981 | 0 | 0 | 10 | 0 | 23 | 33 |
| 1982 | 0 | 0 | 15 | 0 | 27 | 42 |
| 1983 | 0 | 0 | 17 | 0 | 21 | 38 |
| 1984 | 0 | 0 | 9 | 0 | 23 | 32 |
| 1985 | 0 | 1 | 11 | 0 | 25 | 37 |
| 1986 | 0 | 2 | 21 | 0 | 23 | 46 |
| 1987 | 0 | 2 | 27 | 0 | 28 | 57 |
| 1988 | 0 | 3 | 26 | 0 | 22 | 51 |
| 1989 | 0 | 6 | 26 | 0 | 22 | 54 |
| 1990 | 1 | 31 | 27 | 1 | 20 | 80 |
| 1991 | 2 | 30 | 48 | 0 | 22 | 102 |
| 1992 | 3 | 14 | 36 | 1 | 23 | 77 |
| 1993 | 2 | 47 | 58 | 0 | 30 | 137 |
| 1994 | 3 | 100 | 121 | 0 | 33 | 257 |
| 1995 | 8 | 55 | 60 | 1 | 32 | 156 |
| 1996 | 9 | 83 | 68 | 1 | 22 | 183 |
| 1997 | 2 | 175 | 85 | 1 | 35 | 298 |
| 1998 | 7 | 204 | 80 | 1 | 29 | 321 |
| 1999 | 5 | 148 | 71 | 1 | 26 | 251 |
| 2000 | 8 | 204 | 76 | 0 | 42 | 330 |
| 2001 | 7 | 254 | 81 | 1 | 40 | 383 |
| 2002 | 2 | 231 | 129 | 1 | 31 | 394 |
| 2003 | 3 | 342 | 122 | 2 | 28 | 497 |
| 2004 | 4 | 318 | 130 | 1 | 35 | 488 |
| 2005 | 3 | 173 | 284 | 0 | 44 | 504 |
| 2006 | 5 | 252 | 291 | 0 | 43 | 591 |
| 2007 | 3 | 221 | 289 | 7 | 66 | 586 |
| 2008 | 5 | 78 | 384 | 23 | 53 | 543 |
| 2009 | 7 | 99 | 481 | 0 | 86 | 673 |
| 2010 | 14 | 57 | 550 | 0 | 98 | 719 |
| 2011 | 7 | 10 | 937 | 1 | 140 | 1095 |
| 2012 | 12 | 39 | 1308 | 14 | 310 | 1683 |
| 2013 | 15 | 52 | 1678 | 12 | 324 | 2081 |
| 2014 | 20 | 45 | 1776 | 3 | 422 | 2266 |
| 2015 | 25 | 32 | 2496 | 4 | 704 | 3261 |
| 2016 | 33 | 14 | 2734 | 2 | 900 | 3683 |
| 2017 | 38 | 24 | 3777 | 5 | 986 | 4830 |
| 2018 | 36 | 25 | 3816 | 8 | 1163 | 5048 |
| 2019 | 41 | 17 | 4287 | 12 | 985 | 5342 |
| 2020 | 8 | 10 | 4885 | 3 | 1213 | 6119 |
| 2021 | 14 | 12 | 5104 | 7 | 1355 | 6492 |
| 2022 | 12 | 9 | 5930 | 7 | 1354 | 7312 |
| 2023 | 42 | 26 | 5268 | 0 | 1433 | 6769 |
| 2024 | 54 | 22 | 5957 | 0 | 1664 | 7697 |
| 2025 | 0 | 13 | 69 | 0 | 9 | 91 |
| Total | 461 | 3484 | 53782 | 120 | 14312 | 72159 |