Year | Value | 2022 | 57,824 | 2021 | 57,573 | 2020 | 57,229 | 2019 | 56,796 | 2018 | 56,282 | 2017 | 55,705 | 2016 | 55,114 | 2015 | 54,493 | 2014 | 53,763 | 2013 | 52,919 | 2012 | 51,986 | 2011 | 51,000 | 2010 | 50,029 | 2009 | 49,118 | 2008 | 48,244 | 2007 | 47,706 | 2006 | 47,628 | 2005 | 47,750 | 2004 | 48,011 | 2003 | 48,422 | 2002 | 48,215 | 2001 | 47,130 | 2000 | 45,792 | 1999 | 44,400 | 1998 | 43,518 | 1997 | 43,156 | 1996 | 42,805 | 1995 | 42,445 | 1994 | 42,055 | 1993 | 41,575 | 1992 | 40,966 | 1991 | 40,254 | 1990 | 39,478 | 1989 | 38,677 | 1988 | 37,853 | 1987 | 37,013 | 1986 | 36,151 | 1985 | 35,242 | 1984 | 34,274 | 1983 | 33,252 | 1982 | 32,205 | 1981 | 31,201 | 1980 | 30,226 | 1979 | 29,191 | 1978 | 28,132 | 1977 | 27,120 | 1976 | 26,159 | 1975 | 25,265 | 1974 | 24,424 | 1973 | 23,623 | 1972 | 22,893 | 1971 | 22,239 | 1970 | 21,655 | 1969 | 21,130 | 1968 | 20,652 | 1967 | 20,240 | 1966 | 19,870 | 1965 | 19,499 | 1964 | 19,122 | 1963 | 18,735 | 1962 | 18,336 | 1961 | 17,921 | 1960 | 17,489 |
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