Year | Value | 2022 | 41,148 | 2021 | 40,804 | 2020 | 40,799 | 2019 | 40,673 | 2018 | 40,391 | 2017 | 39,909 | 2016 | 39,255 | 2015 | 38,599 | 2014 | 38,132 | 2013 | 38,018 | 2012 | 38,297 | 2011 | 37,923 | 2010 | 36,675 | 2009 | 35,224 | 2008 | 33,495 | 2007 | 31,545 | 2006 | 29,442 | 2005 | 27,348 | 2004 | 25,499 | 2003 | 24,098 | 2002 | 22,678 | 2001 | 20,688 | 2000 | 18,324 | 1999 | 15,805 | 1998 | 13,234 | 1997 | 11,541 | 1996 | 9,950 | 1995 | 8,383 | 1994 | 11,023 | 1993 | 14,163 | 1992 | 14,521 | 1991 | 15,006 | 1990 | 15,355 | 1989 | 15,548 | 1988 | 15,603 | 1987 | 15,392 | 1986 | 14,992 | 1985 | 14,537 | 1984 | 14,021 | 1983 | 13,405 | 1982 | 12,779 | 1981 | 12,249 | 1980 | 11,849 | 1979 | 11,603 | 1978 | 11,539 | 1977 | 11,622 | 1976 | 11,720 | 1975 | 11,739 | 1974 | 11,663 | 1973 | 11,470 | 1972 | 11,169 | 1971 | 10,869 | 1970 | 10,648 | 1969 | 10,508 | 1968 | 10,456 | 1967 | 10,459 | 1966 | 10,399 | 1965 | 10,196 | 1964 | 9,840 | 1963 | 9,338 | 1962 | 8,693 | 1961 | 8,017 | 1960 | 7,429 |
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