Year | Value | 2022 | 65,370 | 2021 | 65,177 | 2020 | 57,350 | 2019 | 47,915 | 2018 | 40,997 | 2017 | 39,817 | 2016 | 43,194 | 2015 | 47,695 | 2014 | 52,053 | 2013 | 54,698 | 2012 | 55,634 | 2011 | 55,561 | 2010 | 55,461 | 2009 | 55,433 | 2008 | 54,833 | 2007 | 53,858 | 2006 | 52,999 | 2005 | 52,641 | 2004 | 52,908 | 2003 | 53,987 | 2002 | 55,373 | 2001 | 56,272 | 2000 | 56,606 | 1999 | 56,224 | 1998 | 55,497 | 1997 | 54,969 | 1996 | 54,966 | 1995 | 54,672 | 1994 | 53,726 | 1993 | 51,415 | 1992 | 47,689 | 1991 | 43,612 | 1990 | 40,312 | 1989 | 38,459 | 1988 | 38,437 | 1987 | 39,971 | 1986 | 42,102 | 1985 | 43,906 | 1984 | 44,629 | 1983 | 43,967 | 1982 | 42,297 | 1981 | 40,285 | 1980 | 38,506 | 1979 | 37,186 | 1978 | 36,417 | 1977 | 36,183 | 1976 | 36,234 | 1975 | 36,186 | 1974 | 35,849 | 1973 | 35,077 | 1972 | 33,771 | 1971 | 32,023 | 1970 | 30,085 | 1969 | 28,197 | 1968 | 26,490 | 1967 | 25,064 | 1966 | 23,922 | 1965 | 23,055 | 1964 | 22,447 | 1963 | 22,021 | 1962 | 21,759 | 1961 | 21,520 | 1960 | 21,142 |
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