Year | Value | 2023 | 43,980 | 2022 | 43,579 | 2021 | 42,907 | 2020 | 41,693 | 2019 | 40,282 | 2018 | 38,855 | 2017 | 37,457 | 2016 | 36,154 | 2015 | 34,962 | 2014 | 33,870 | 2013 | 32,913 | 2012 | 32,091 | 2011 | 31,319 | 2010 | 30,551 | 2009 | 29,801 | 2008 | 29,067 | 2007 | 28,338 | 2006 | 27,675 | 2005 | 27,074 | 2004 | 26,542 | 2003 | 26,111 | 2002 | 25,735 | 2001 | 25,386 | 2000 | 25,044 | 1999 | 24,709 | 1998 | 24,383 | 1997 | 24,059 | 1996 | 23,734 | 1995 | 23,414 | 1994 | 23,111 | 1993 | 22,617 | 1992 | 22,035 | 1991 | 21,593 | 1990 | 21,196 | 1989 | 20,844 | 1988 | 20,539 | 1987 | 20,280 | 1986 | 20,040 | 1985 | 19,796 | 1984 | 19,547 | 1983 | 19,289 | 1982 | 19,025 | 1981 | 18,791 | 1980 | 18,609 | 1979 | 18,478 | 1978 | 18,405 | 1977 | 18,365 | 1976 | 18,296 | 1975 | 18,162 |
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