

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 2 | 2 | 5 | 0 | 0 | 9 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1974 | 0 | 2 | 2 | 0 | 0 | 4 |
| 1975 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1976 | 0 | 2 | 2 | 0 | 0 | 4 |
| 1977 | 0 | 2 | 3 | 0 | 0 | 5 |
| 1978 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1979 | 0 | 3 | 3 | 0 | 0 | 6 |
| 1980 | 0 | 1 | 2 | 0 | 0 | 3 |
| 1981 | 0 | 0 | 5 | 0 | 0 | 5 |
| 1982 | 0 | 2 | 4 | 0 | 0 | 6 |
| 1983 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1984 | 0 | 1 | 3 | 0 | 0 | 4 |
| 1985 | 0 | 3 | 1 | 0 | 0 | 4 |
| 1986 | 0 | 2 | 2 | 0 | 0 | 4 |
| 1987 | 0 | 5 | 13 | 0 | 0 | 18 |
| 1988 | 0 | 3 | 20 | 0 | 0 | 23 |
| 1989 | 0 | 6 | 24 | 0 | 0 | 30 |
| 1990 | 2 | 18 | 7 | 0 | 0 | 27 |
| 1991 | 3 | 14 | 9 | 0 | 0 | 26 |
| 1992 | 1 | 252 | 7 | 0 | 0 | 260 |
| 1993 | 1 | 539 | 15 | 0 | 0 | 555 |
| 1994 | 2 | 1499 | 33 | 0 | 0 | 1534 |
| 1995 | 0 | 1188 | 22 | 0 | 0 | 1210 |
| 1996 | 0 | 1363 | 11 | 0 | 0 | 1374 |
| 1997 | 1 | 864 | 15 | 0 | 0 | 880 |
| 1998 | 1 | 1126 | 15 | 0 | 0 | 1142 |
| 1999 | 0 | 217 | 16 | 0 | 0 | 233 |
| 2000 | 1 | 1174 | 25 | 0 | 0 | 1200 |
| 2001 | 1 | 561 | 20 | 0 | 0 | 582 |
| 2002 | 4 | 943 | 37 | 0 | 0 | 984 |
| 2003 | 0 | 761 | 41 | 0 | 0 | 802 |
| 2004 | 0 | 1231 | 29 | 0 | 0 | 1260 |
| 2005 | 0 | 452 | 31 | 0 | 0 | 483 |
| 2006 | 0 | 526 | 64 | 0 | 0 | 590 |
| 2007 | 0 | 854 | 78 | 0 | 0 | 932 |
| 2008 | 0 | 453 | 74 | 0 | 0 | 527 |
| 2009 | 2 | 70 | 81 | 0 | 0 | 153 |
| 2010 | 0 | 340 | 174 | 0 | 0 | 514 |
| 2011 | 0 | 246 | 134 | 0 | 0 | 380 |
| 2012 | 5 | 502 | 136 | 0 | 2 | 645 |
| 2013 | 4 | 652 | 193 | 0 | 0 | 849 |
| 2014 | 7 | 635 | 256 | 0 | 0 | 898 |
| 2015 | 7 | 879 | 281 | 0 | 0 | 1167 |
| 2016 | 10 | 926 | 337 | 0 | 0 | 1273 |
| 2017 | 13 | 964 | 374 | 0 | 0 | 1351 |
| 2018 | 8 | 1117 | 417 | 0 | 0 | 1542 |
| 2019 | 8 | 1020 | 423 | 0 | 0 | 1451 |
| 2020 | 6 | 1214 | 530 | 0 | 0 | 1750 |
| 2021 | 1 | 1301 | 537 | 0 | 0 | 1839 |
| 2022 | 3 | 1272 | 644 | 0 | 0 | 1919 |
| 2023 | 13 | 1702 | 260 | 0 | 0 | 1975 |
| 2024 | 7 | 1780 | 255 | 0 | 0 | 2042 |
| 2025 | 0 | 0 | 8 | 0 | 0 | 8 |
| Total | 113 | 28692 | 5685 | 0 | 2 | 34492 |