Year | Value | 2022 | 37,175 | 2021 | 37,346 | 2020 | 37,576 | 2019 | 38,872 | 2018 | 39,132 | 2017 | 38,507 | 2016 | 39,086 | 2015 | 39,544 | 2014 | 39,879 | 2013 | 40,088 | 2012 | 40,153 | 2011 | 40,304 | 2010 | 40,294 | 2009 | 39,828 | 2008 | 39,123 | 2007 | 38,228 | 2006 | 37,209 | 2005 | 36,357 | 2004 | 35,794 | 2003 | 35,420 | 2002 | 35,265 | 2001 | 35,350 | 2000 | 35,673 | 1999 | 36,183 | 1998 | 36,815 | 1997 | 37,499 | 1996 | 38,184 | 1995 | 38,835 | 1994 | 39,401 | 1993 | 39,854 | 1992 | 40,246 | 1991 | 40,715 | 1990 | 41,365 | 1989 | 42,152 | 1988 | 43,031 | 1987 | 43,989 | 1986 | 45,015 | 1985 | 46,051 | 1984 | 47,004 | 1983 | 47,779 | 1982 | 48,284 | 1981 | 48,458 | 1980 | 48,373 | 1979 | 48,007 | 1978 | 47,298 | 1977 | 46,305 | 1976 | 45,166 | 1975 | 44,046 | 1974 | 42,990 | 1973 | 41,983 | 1972 | 41,042 | 1971 | 40,101 | 1970 | 39,195 | 1969 | 38,295 | 1968 | 37,243 | 1967 | 36,051 | 1966 | 34,723 | 1965 | 33,255 | 1964 | 31,654 | 1963 | 29,987 | 1962 | 28,365 | 1961 | 26,864 | 1960 | 25,639 |
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