Year | Value | 2022 | 13,332 | 2021 | 14,752 | 2020 | 15,627 | 2019 | 16,337 | 2018 | 16,922 | 2017 | 17,421 | 2016 | 17,794 | 2015 | 18,116 | 2014 | 18,410 | 2013 | 18,465 | 2012 | 18,269 | 2011 | 17,842 | 2010 | 17,255 | 2009 | 16,585 | 2008 | 15,795 | 2007 | 15,005 | 2006 | 14,507 | 2005 | 14,335 | 2004 | 14,293 | 2003 | 14,059 | 2002 | 13,528 | 2001 | 12,886 | 2000 | 12,337 | 1999 | 12,095 | 1998 | 12,222 | 1997 | 12,682 | 1996 | 13,526 | 1995 | 14,388 | 1994 | 15,039 | 1993 | 15,263 | 1992 | 15,081 | 1991 | 14,748 | 1990 | 14,322 | 1989 | 13,796 | 1988 | 13,276 | 1987 | 12,801 | 1986 | 12,338 | 1985 | 12,014 | 1984 | 11,777 | 1983 | 11,472 | 1982 | 11,037 | 1981 | 10,531 | 1980 | 10,084 | 1979 | 9,703 | 1978 | 9,394 | 1977 | 9,147 | 1976 | 8,924 | 1975 | 8,707 | 1974 | 8,495 | 1973 | 8,286 | 1972 | 8,105 | 1971 | 7,926 | 1970 | 7,709 | 1969 | 7,455 | 1968 | 7,185 | 1967 | 6,898 | 1966 | 6,607 | 1965 | 6,338 | 1964 | 6,103 | 1963 | 5,892 | 1962 | 5,709 | 1961 | 5,553 | 1960 | 5,410 |
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