

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 1 | 5 | 0 | 0 | 6 |
| 1970 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1971 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1972 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1973 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1974 | 0 | 1 | 0 | 0 | 0 | 1 |
| 1975 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1976 | 0 | 0 | 1 | 0 | 0 | 1 |
| 1977 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1978 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1979 | 0 | 0 | 0 | 0 | 2 | 2 |
| 1980 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1981 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1982 | 0 | 0 | 2 | 0 | 0 | 2 |
| 1983 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1984 | 0 | 1 | 10 | 0 | 0 | 11 |
| 1985 | 0 | 2 | 1 | 0 | 0 | 3 |
| 1986 | 0 | 1 | 1 | 0 | 0 | 2 |
| 1987 | 0 | 0 | 19 | 0 | 1 | 20 |
| 1988 | 0 | 1 | 22 | 0 | 0 | 23 |
| 1989 | 0 | 2 | 28 | 0 | 0 | 30 |
| 1990 | 0 | 13 | 2 | 0 | 0 | 15 |
| 1991 | 0 | 0 | 3 | 0 | 0 | 3 |
| 1992 | 0 | 5 | 2 | 0 | 0 | 7 |
| 1993 | 0 | 10 | 6 | 0 | 1 | 17 |
| 1994 | 1 | 43 | 10 | 0 | 1 | 55 |
| 1995 | 0 | 8 | 7 | 0 | 1 | 16 |
| 1996 | 0 | 57 | 5 | 0 | 0 | 62 |
| 1997 | 0 | 235 | 6 | 0 | 1 | 242 |
| 1998 | 0 | 237 | 6 | 0 | 0 | 243 |
| 1999 | 0 | 231 | 3 | 0 | 0 | 234 |
| 2000 | 1 | 335 | 6 | 0 | 1 | 343 |
| 2001 | 0 | 261 | 9 | 0 | 0 | 270 |
| 2002 | 0 | 252 | 26 | 0 | 0 | 278 |
| 2003 | 0 | 300 | 18 | 0 | 0 | 318 |
| 2004 | 0 | 274 | 6 | 0 | 0 | 280 |
| 2005 | 1 | 259 | 18 | 0 | 0 | 278 |
| 2006 | 0 | 237 | 15 | 0 | 1 | 253 |
| 2007 | 0 | 193 | 19 | 0 | 0 | 212 |
| 2008 | 0 | 8 | 50 | 0 | 0 | 58 |
| 2009 | 1 | 33 | 74 | 0 | 0 | 108 |
| 2010 | 0 | 534 | 166 | 0 | 0 | 700 |
| 2011 | 0 | 37 | 141 | 0 | 0 | 178 |
| 2012 | 4 | 158 | 98 | 0 | 0 | 260 |
| 2013 | 4 | 194 | 126 | 0 | 0 | 324 |
| 2014 | 9 | 278 | 182 | 0 | 0 | 469 |
| 2015 | 13 | 347 | 282 | 0 | 0 | 642 |
| 2016 | 1 | 311 | 223 | 0 | 0 | 535 |
| 2017 | 10 | 435 | 308 | 0 | 0 | 753 |
| 2018 | 10 | 467 | 330 | 0 | 0 | 807 |
| 2019 | 20 | 554 | 380 | 0 | 2 | 956 |
| 2020 | 1 | 608 | 445 | 0 | 3 | 1057 |
| 2021 | 5 | 570 | 345 | 0 | 0 | 920 |
| 2022 | 7 | 557 | 332 | 0 | 0 | 896 |
| 2023 | 14 | 573 | 215 | 0 | 0 | 802 |
| 2024 | 15 | 611 | 223 | 0 | 0 | 849 |
| 2025 | 0 | 0 | 3 | 0 | 0 | 3 |
| Total | 117 | 9236 | 4187 | 0 | 14 | 13554 |