Year | Value | 2022 | 33,819 | 2021 | 32,322 | 2020 | 30,690 | 2019 | 29,123 | 2018 | 27,650 | 2017 | 26,339 | 2016 | 25,252 | 2015 | 24,368 | 2014 | 23,641 | 2013 | 23,073 | 2012 | 22,592 | 2011 | 22,112 | 2010 | 21,629 | 2009 | 21,131 | 2008 | 20,641 | 2007 | 20,132 | 2006 | 19,570 | 2005 | 18,975 | 2004 | 18,384 | 2003 | 17,799 | 2002 | 17,268 | 2001 | 16,815 | 2000 | 16,432 | 1999 | 16,153 | 1998 | 15,991 | 1997 | 15,829 | 1996 | 15,864 | 1995 | 16,160 | 1994 | 17,113 | 1993 | 17,836 | 1992 | 17,461 | 1991 | 16,786 | 1990 | 15,980 | 1989 | 15,327 | 1988 | 14,674 | 1987 | 13,969 | 1986 | 13,428 | 1985 | 12,927 | 1984 | 12,429 | 1983 | 11,925 | 1982 | 11,443 | 1981 | 10,928 | 1980 | 10,415 | 1979 | 9,946 | 1978 | 9,480 | 1977 | 9,020 | 1976 | 8,621 | 1975 | 8,296 | 1974 | 8,008 | 1973 | 7,747 | 1972 | 7,518 | 1971 | 7,322 | 1970 | 7,158 | 1969 | 7,023 | 1968 | 6,909 | 1967 | 6,816 | 1966 | 6,763 | 1965 | 6,747 | 1964 | 6,749 | 1963 | 6,774 | 1962 | 6,805 | 1961 | 6,821 | 1960 | 6,811 |
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