Year | Value | 2022 | 57,004 | 2021 | 55,268 | 2020 | 53,571 | 2019 | 52,115 | 2018 | 50,830 | 2017 | 49,636 | 2016 | 48,463 | 2015 | 47,215 | 2014 | 45,663 | 2013 | 43,781 | 2012 | 41,801 | 2011 | 39,834 | 2010 | 38,008 | 2009 | 36,383 | 2008 | 34,829 | 2007 | 33,224 | 2006 | 31,618 | 2005 | 30,224 | 2004 | 29,446 | 2003 | 29,486 | 2002 | 30,039 | 2001 | 30,710 | 2000 | 31,246 | 1999 | 31,499 | 1998 | 31,463 | 1997 | 31,312 | 1996 | 31,251 | 1995 | 31,385 | 1994 | 31,718 | 1993 | 32,154 | 1992 | 32,529 | 1991 | 32,697 | 1990 | 32,359 | 1989 | 31,562 | 1988 | 30,699 | 1987 | 29,893 | 1986 | 29,187 | 1985 | 28,589 | 1984 | 28,086 | 1983 | 27,666 | 1982 | 27,306 | 1981 | 26,972 | 1980 | 26,260 | 1979 | 25,332 | 1978 | 24,736 | 1977 | 24,616 | 1976 | 25,051 | 1975 | 25,936 | 1974 | 26,229 | 1973 | 25,806 | 1972 | 25,278 | 1971 | 24,578 | 1970 | 23,927 | 1969 | 23,360 | 1968 | 22,900 | 1967 | 22,496 | 1966 | 22,031 | 1965 | 21,436 | 1964 | 20,718 | 1963 | 19,846 | 1962 | 18,887 | 1961 | 18,041 | 1960 | 17,452 |
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