

*Excludes Observations that spanned multiple years
B![]() | b![]() | t![]() | W![]() | w![]() | ||
|---|---|---|---|---|---|---|
| Pre 1970 | 6 | 0 | 26 | 0 | 139 | 171 |
| 1970 | 0 | 0 | 4 | 0 | 4 | 8 |
| 1971 | 0 | 0 | 2 | 0 | 10 | 12 |
| 1972 | 0 | 0 | 2 | 0 | 7 | 9 |
| 1973 | 0 | 0 | 2 | 0 | 8 | 10 |
| 1974 | 0 | 7 | 8 | 0 | 7 | 22 |
| 1975 | 2 | 9 | 8 | 0 | 9 | 28 |
| 1976 | 0 | 4 | 6 | 0 | 13 | 23 |
| 1977 | 1 | 6 | 21 | 0 | 16 | 44 |
| 1978 | 0 | 5 | 12 | 0 | 15 | 32 |
| 1979 | 3 | 4 | 28 | 0 | 17 | 52 |
| 1980 | 0 | 1 | 22 | 0 | 18 | 41 |
| 1981 | 2 | 1 | 30 | 0 | 21 | 54 |
| 1982 | 3 | 0 | 32 | 0 | 28 | 63 |
| 1983 | 1 | 4 | 17 | 0 | 20 | 42 |
| 1984 | 1 | 0 | 16 | 0 | 22 | 39 |
| 1985 | 2 | 6 | 14 | 0 | 19 | 41 |
| 1986 | 5 | 3 | 26 | 0 | 21 | 55 |
| 1987 | 6 | 8 | 36 | 2 | 30 | 82 |
| 1988 | 5 | 5 | 25 | 0 | 27 | 62 |
| 1989 | 8 | 15 | 27 | 1 | 24 | 75 |
| 1990 | 16 | 25 | 49 | 1 | 23 | 114 |
| 1991 | 37 | 24 | 88 | 2 | 20 | 171 |
| 1992 | 14 | 11 | 109 | 0 | 23 | 157 |
| 1993 | 36 | 26 | 196 | 1 | 33 | 292 |
| 1994 | 32 | 62 | 183 | 0 | 40 | 317 |
| 1995 | 27 | 23 | 139 | 1 | 30 | 220 |
| 1996 | 26 | 57 | 106 | 0 | 24 | 213 |
| 1997 | 19 | 62 | 202 | 0 | 39 | 322 |
| 1998 | 14 | 66 | 166 | 0 | 34 | 280 |
| 1999 | 4 | 37 | 125 | 1 | 25 | 192 |
| 2000 | 20 | 36 | 153 | 0 | 42 | 251 |
| 2001 | 12 | 14 | 217 | 0 | 44 | 287 |
| 2002 | 4 | 8 | 275 | 0 | 23 | 310 |
| 2003 | 16 | 10 | 278 | 1 | 32 | 337 |
| 2004 | 8 | 25 | 253 | 0 | 34 | 320 |
| 2005 | 19 | 14 | 363 | 0 | 40 | 436 |
| 2006 | 18 | 18 | 407 | 0 | 38 | 481 |
| 2007 | 18 | 15 | 333 | 5 | 40 | 411 |
| 2008 | 10 | 15 | 462 | 11 | 38 | 536 |
| 2009 | 25 | 12 | 695 | 0 | 66 | 798 |
| 2010 | 27 | 21 | 797 | 0 | 73 | 918 |
| 2011 | 17 | 23 | 1105 | 0 | 96 | 1241 |
| 2012 | 41 | 52 | 1494 | 5 | 204 | 1796 |
| 2013 | 40 | 89 | 1601 | 1 | 200 | 1931 |
| 2014 | 41 | 46 | 1410 | 2 | 256 | 1755 |
| 2015 | 56 | 27 | 1851 | 3 | 368 | 2305 |
| 2016 | 67 | 22 | 2220 | 1 | 450 | 2760 |
| 2017 | 79 | 42 | 2909 | 4 | 458 | 3492 |
| 2018 | 68 | 44 | 3031 | 2 | 533 | 3678 |
| 2019 | 103 | 44 | 3267 | 10 | 401 | 3825 |
| 2020 | 50 | 30 | 3706 | 3 | 559 | 4348 |
| 2021 | 44 | 35 | 3607 | 1 | 546 | 4233 |
| 2022 | 48 | 29 | 4091 | 1 | 632 | 4801 |
| 2023 | 120 | 43 | 3402 | 0 | 591 | 4156 |
| 2024 | 148 | 42 | 3814 | 0 | 720 | 4724 |
| 2025 | 0 | 3 | 52 | 0 | 0 | 55 |
| Total | 1369 | 1230 | 43520 | 59 | 7250 | 53428 |