Year | Value | 2022 | 39,388 | 2021 | 39,171 | 2020 | 38,839 | 2019 | 38,151 | 2018 | 37,247 | 2017 | 36,329 | 2016 | 35,421 | 2015 | 34,552 | 2014 | 33,687 | 2013 | 32,820 | 2012 | 31,963 | 2011 | 31,131 | 2010 | 30,322 | 2009 | 29,539 | 2008 | 28,772 | 2007 | 28,007 | 2006 | 27,283 | 2005 | 26,637 | 2004 | 26,039 | 2003 | 25,423 | 2002 | 24,780 | 2001 | 24,281 | 2000 | 23,850 | 1999 | 23,282 | 1998 | 22,638 | 1997 | 22,077 | 1996 | 21,523 | 1995 | 20,831 | 1994 | 20,148 | 1993 | 19,422 | 1992 | 18,679 | 1991 | 17,954 | 1990 | 17,155 | 1989 | 16,482 | 1988 | 15,961 | 1987 | 15,427 | 1986 | 14,891 | 1985 | 14,371 | 1984 | 13,873 | 1983 | 13,396 | 1982 | 12,939 | 1981 | 12,517 | 1980 | 12,134 | 1979 | 11,793 | 1978 | 11,497 | 1977 | 11,242 | 1976 | 11,028 | 1975 | 10,850 | 1974 | 10,711 | 1973 | 10,607 | 1972 | 10,516 | 1971 | 10,451 | 1970 | 10,423 | 1969 | 10,400 | 1968 | 10,377 | 1967 | 10,380 | 1966 | 10,381 | 1965 | 10,338 | 1964 | 10,237 | 1963 | 10,059 | 1962 | 9,812 | 1961 | 9,541 | 1960 | 9,271 |
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