Year | Value | 2022 | 47,213 | 2021 | 47,113 | 2020 | 47,274 | 2019 | 46,553 | 2018 | 45,239 | 2017 | 44,115 | 2016 | 43,126 | 2015 | 42,057 | 2014 | 40,906 | 2013 | 39,615 | 2012 | 38,155 | 2011 | 36,764 | 2010 | 35,480 | 2009 | 33,902 | 2008 | 31,923 | 2007 | 30,088 | 2006 | 28,803 | 2005 | 27,876 | 2004 | 26,937 | 2003 | 25,885 | 2002 | 24,888 | 2001 | 24,173 | 2000 | 23,686 | 1999 | 23,524 | 1998 | 23,970 | 1997 | 24,924 | 1996 | 26,199 | 1995 | 27,782 | 1994 | 29,605 | 1993 | 31,449 | 1992 | 32,949 | 1991 | 34,132 | 1990 | 35,118 | 1989 | 35,478 | 1988 | 34,354 | 1987 | 32,078 | 1986 | 29,809 | 1985 | 28,139 | 1984 | 27,103 | 1983 | 26,214 | 1982 | 25,305 | 1981 | 24,551 | 1980 | 24,009 | 1979 | 23,553 | 1978 | 23,117 | 1977 | 22,640 | 1976 | 22,055 | 1975 | 21,260 | 1974 | 20,213 | 1973 | 18,990 | 1972 | 17,777 | 1971 | 16,575 | 1970 | 15,432 | 1969 | 14,450 | 1968 | 13,682 | 1967 | 13,163 | 1966 | 12,732 | 1965 | 12,347 | 1964 | 12,000 | 1963 | 11,715 | 1962 | 11,608 | 1961 | 11,529 | 1960 | 11,400 |
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