Year | Value | 2022 | 49,955 | 2021 | 48,183 | 2020 | 46,588 | 2019 | 46,315 | 2018 | 46,735 | 2017 | 46,214 | 2016 | 45,162 | 2015 | 43,765 | 2014 | 42,213 | 2013 | 40,594 | 2012 | 38,971 | 2011 | 37,446 | 2010 | 36,041 | 2009 | 34,738 | 2008 | 33,576 | 2007 | 32,554 | 2006 | 31,640 | 2005 | 30,757 | 2004 | 29,915 | 2003 | 29,167 | 2002 | 28,476 | 2001 | 27,849 | 2000 | 27,293 | 1999 | 26,785 | 1998 | 26,314 | 1997 | 25,872 | 1996 | 25,466 | 1995 | 25,149 | 1994 | 24,968 | 1993 | 24,528 | 1992 | 23,999 | 1991 | 23,734 | 1990 | 23,497 | 1989 | 23,288 | 1988 | 23,108 | 1987 | 22,965 | 1986 | 22,848 | 1985 | 22,742 | 1984 | 22,656 | 1983 | 22,581 | 1982 | 22,490 | 1981 | 22,380 | 1980 | 22,243 | 1979 | 22,079 | 1978 | 21,882 | 1977 | 21,644 | 1976 | 21,376 | 1975 | 21,084 | 1974 | 20,767 | 1973 | 20,408 | 1972 | 20,027 | 1971 | 19,691 | 1970 | 19,439 | 1969 | 19,271 | 1968 | 19,204 | 1967 | 19,217 | 1966 | 19,220 | 1965 | 19,163 | 1964 | 19,053 | 1963 | 18,890 | 1962 | 18,695 | 1961 | 18,560 | 1960 | 18,551 |
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