Year | Value | 2022 | 35,643 | 2021 | 35,949 | 2020 | 36,310 | 2019 | 37,237 | 2018 | 37,660 | 2017 | 37,647 | 2016 | 38,309 | 2015 | 38,853 | 2014 | 39,264 | 2013 | 39,528 | 2012 | 39,702 | 2011 | 39,977 | 2010 | 40,071 | 2009 | 39,699 | 2008 | 39,029 | 2007 | 38,121 | 2006 | 37,048 | 2005 | 36,090 | 2004 | 35,405 | 2003 | 34,941 | 2002 | 34,812 | 2001 | 35,047 | 2000 | 35,565 | 1999 | 36,298 | 1998 | 37,166 | 1997 | 38,083 | 1996 | 38,979 | 1995 | 39,804 | 1994 | 40,513 | 1993 | 41,098 | 1992 | 41,619 | 1991 | 42,164 | 1990 | 42,801 | 1989 | 43,519 | 1988 | 44,281 | 1987 | 45,085 | 1986 | 45,943 | 1985 | 46,827 | 1984 | 47,672 | 1983 | 48,408 | 1982 | 48,965 | 1981 | 49,276 | 1980 | 49,315 | 1979 | 49,014 | 1978 | 48,376 | 1977 | 47,458 | 1976 | 46,344 | 1975 | 45,178 | 1974 | 44,031 | 1973 | 42,895 | 1972 | 41,784 | 1971 | 40,678 | 1970 | 39,589 | 1969 | 38,497 | 1968 | 37,311 | 1967 | 36,048 | 1966 | 34,726 | 1965 | 33,350 | 1964 | 31,930 | 1963 | 30,509 | 1962 | 29,153 | 1961 | 27,881 | 1960 | 26,714 |
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