Year | Value | 2022 | 58,397 | 2021 | 56,125 | 2020 | 53,973 | 2019 | 52,149 | 2018 | 50,593 | 2017 | 49,235 | 2016 | 48,010 | 2015 | 46,792 | 2014 | 45,469 | 2013 | 43,942 | 2012 | 42,222 | 2011 | 40,418 | 2010 | 38,645 | 2009 | 36,984 | 2008 | 35,372 | 2007 | 33,687 | 2006 | 31,980 | 2005 | 30,516 | 2004 | 29,941 | 2003 | 30,605 | 2002 | 31,937 | 2001 | 33,269 | 2000 | 34,306 | 1999 | 34,858 | 1998 | 34,822 | 1997 | 34,417 | 1996 | 33,980 | 1995 | 33,703 | 1994 | 33,659 | 1993 | 33,801 | 1992 | 33,995 | 1991 | 34,109 | 1990 | 33,505 | 1989 | 32,196 | 1988 | 30,986 | 1987 | 29,918 | 1986 | 28,882 | 1985 | 27,955 | 1984 | 27,190 | 1983 | 26,618 | 1982 | 26,236 | 1981 | 26,013 | 1980 | 25,446 | 1979 | 24,616 | 1978 | 24,148 | 1977 | 24,249 | 1976 | 25,002 | 1975 | 26,309 | 1974 | 26,929 | 1973 | 26,608 | 1972 | 26,083 | 1971 | 25,351 | 1970 | 24,647 | 1969 | 24,016 | 1968 | 23,486 | 1967 | 23,013 | 1966 | 22,494 | 1965 | 21,869 | 1964 | 21,146 | 1963 | 20,297 | 1962 | 19,381 | 1961 | 18,579 | 1960 | 18,023 |
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