

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 0 | 0 | 12 | 0 | 106 | 118 |
| 1970 | 0 | 0 | 1 | 0 | 4 | 5 |
| 1971 | 0 | 0 | 1 | 0 | 10 | 11 |
| 1972 | 0 | 0 | 0 | 0 | 7 | 7 |
| 1973 | 0 | 0 | 1 | 0 | 7 | 8 |
| 1974 | 0 | 0 | 2 | 0 | 5 | 7 |
| 1975 | 0 | 0 | 0 | 0 | 9 | 9 |
| 1976 | 0 | 0 | 1 | 0 | 14 | 15 |
| 1977 | 0 | 0 | 1 | 0 | 13 | 14 |
| 1978 | 0 | 0 | 2 | 0 | 11 | 13 |
| 1979 | 0 | 0 | 3 | 0 | 21 | 24 |
| 1980 | 0 | 0 | 5 | 0 | 14 | 19 |
| 1981 | 0 | 0 | 3 | 0 | 20 | 23 |
| 1982 | 0 | 0 | 0 | 0 | 20 | 20 |
| 1983 | 0 | 0 | 3 | 0 | 17 | 20 |
| 1984 | 0 | 0 | 1 | 0 | 18 | 19 |
| 1985 | 0 | 0 | 4 | 0 | 19 | 23 |
| 1986 | 0 | 0 | 3 | 0 | 14 | 17 |
| 1987 | 0 | 0 | 9 | 0 | 22 | 31 |
| 1988 | 0 | 0 | 4 | 0 | 23 | 27 |
| 1989 | 0 | 0 | 3 | 0 | 17 | 20 |
| 1990 | 0 | 0 | 5 | 3 | 22 | 30 |
| 1991 | 0 | 0 | 16 | 0 | 22 | 38 |
| 1992 | 0 | 0 | 6 | 0 | 22 | 28 |
| 1993 | 0 | 0 | 14 | 0 | 29 | 43 |
| 1994 | 0 | 0 | 9 | 1 | 25 | 35 |
| 1995 | 0 | 0 | 10 | 1 | 25 | 36 |
| 1996 | 0 | 0 | 4 | 0 | 17 | 21 |
| 1997 | 0 | 0 | 8 | 0 | 28 | 36 |
| 1998 | 0 | 0 | 12 | 1 | 29 | 42 |
| 1999 | 0 | 0 | 6 | 0 | 15 | 21 |
| 2000 | 0 | 0 | 11 | 1 | 35 | 47 |
| 2001 | 0 | 0 | 14 | 1 | 37 | 52 |
| 2002 | 0 | 0 | 23 | 0 | 18 | 41 |
| 2003 | 0 | 0 | 20 | 0 | 20 | 40 |
| 2004 | 0 | 0 | 16 | 0 | 26 | 42 |
| 2005 | 0 | 0 | 13 | 0 | 33 | 46 |
| 2006 | 0 | 0 | 16 | 0 | 28 | 44 |
| 2007 | 0 | 0 | 17 | 0 | 37 | 54 |
| 2008 | 0 | 0 | 20 | 4 | 25 | 49 |
| 2009 | 0 | 0 | 27 | 0 | 40 | 67 |
| 2010 | 0 | 0 | 13 | 0 | 30 | 43 |
| 2011 | 0 | 0 | 55 | 1 | 41 | 97 |
| 2012 | 0 | 0 | 65 | 1 | 86 | 152 |
| 2013 | 0 | 0 | 98 | 0 | 86 | 184 |
| 2014 | 0 | 0 | 149 | 0 | 142 | 291 |
| 2015 | 0 | 0 | 95 | 0 | 146 | 241 |
| 2016 | 0 | 0 | 158 | 0 | 176 | 334 |
| 2017 | 0 | 0 | 231 | 3 | 251 | 485 |
| 2018 | 0 | 0 | 172 | 1 | 206 | 379 |
| 2019 | 0 | 0 | 197 | 5 | 121 | 323 |
| 2020 | 0 | 0 | 237 | 0 | 153 | 390 |
| 2021 | 0 | 0 | 203 | 0 | 172 | 375 |
| 2022 | 0 | 0 | 247 | 0 | 286 | 533 |
| 2023 | 0 | 0 | 401 | 0 | 194 | 595 |
| 2024 | 0 | 0 | 268 | 0 | 164 | 432 |
| 2025 | 0 | 0 | 2 | 0 | 4 | 6 |
| Total | 0 | 0 | 2917 | 23 | 3182 | 6122 |