| Year | Value | | 2024 | 280,247 | | 2023 | 267,909 | | 2022 | 258,454 | | 2021 | 252,736 | | 2020 | 246,558 | | 2019 | 238,202 | | 2018 | 229,969 | | 2017 | 222,427 | | 2016 | 215,405 | | 2015 | 208,999 | | 2014 | 202,034 | | 2013 | 194,651 | | 2012 | 188,619 | | 2011 | 182,964 | | 2010 | 179,063 | | 2009 | 176,588 | | 2008 | 172,772 | | 2007 | 170,980 | | 2006 | 168,410 | | 2005 | 161,913 | | 2004 | 156,712 | | 2003 | 152,018 | | 2002 | 144,184 | | 2001 | 138,334 | | 2000 | 138,921 | | 1999 | 138,740 | | 1998 | 134,950 | | 1997 | 131,041 | | 1996 | 127,195 | | 1995 | 123,403 | | 1994 | 118,802 | | 1993 | 110,454 | | 1992 | 99,410 | | 1991 | 92,975 | | 1990 | 92,685 | | 1989 | 92,297 | | 1988 | 90,253 | | 1987 | 89,828 | | 1986 | 90,834 | | 1985 | 92,192 | | 1984 | 92,062 | | 1983 | 91,293 | | 1982 | 93,172 | | 1981 | 102,472 | | 1980 | 114,098 | | 1979 | 119,349 | | 1978 | 119,903 | | 1977 | 118,233 | | 1976 | 116,311 | | 1975 | 114,270 |
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