Year | Value | 2022 | 37,122 | 2021 | 38,682 | 2020 | 41,143 | 2019 | 44,464 | 2018 | 47,518 | 2017 | 49,681 | 2016 | 51,152 | 2015 | 51,357 | 2014 | 50,595 | 2013 | 50,083 | 2012 | 49,468 | 2011 | 49,064 | 2010 | 49,043 | 2009 | 48,843 | 2008 | 48,349 | 2007 | 48,243 | 2006 | 48,495 | 2005 | 48,754 | 2004 | 49,065 | 2003 | 49,397 | 2002 | 49,732 | 2001 | 50,152 | 2000 | 50,568 | 1999 | 49,330 | 1998 | 47,952 | 1997 | 47,452 | 1996 | 46,609 | 1995 | 46,271 | 1994 | 47,114 | 1993 | 49,198 | 1992 | 52,593 | 1991 | 55,912 | 1990 | 58,173 | 1989 | 59,736 | 1988 | 60,437 | 1987 | 60,462 | 1986 | 60,222 | 1985 | 60,146 | 1984 | 60,066 | 1983 | 59,964 | 1982 | 60,100 | 1981 | 60,237 | 1980 | 59,828 | 1979 | 59,301 | 1978 | 58,818 | 1977 | 57,923 | 1976 | 56,541 | 1975 | 54,096 | 1974 | 50,380 | 1973 | 46,646 | 1972 | 44,545 | 1971 | 44,958 | 1970 | 47,051 | 1969 | 49,612 | 1968 | 52,186 | 1967 | 54,212 | 1966 | 54,279 | 1965 | 53,167 | 1964 | 51,919 | 1963 | 50,073 | 1962 | 48,434 | 1961 | 47,697 | 1960 | 48,131 |
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