Year | Value | 2022 | 40,083 | 2021 | 40,118 | 2020 | 40,016 | 2019 | 39,961 | 2018 | 39,650 | 2017 | 39,305 | 2016 | 39,309 | 2015 | 39,285 | 2014 | 39,217 | 2013 | 39,128 | 2012 | 39,146 | 2011 | 39,465 | 2010 | 40,016 | 2009 | 40,650 | 2008 | 41,366 | 2007 | 42,168 | 2006 | 43,130 | 2005 | 44,293 | 2004 | 45,609 | 2003 | 47,032 | 2002 | 48,229 | 2001 | 49,105 | 2000 | 49,874 | 1999 | 50,515 | 1998 | 51,008 | 1997 | 51,366 | 1996 | 51,589 | 1995 | 51,436 | 1994 | 50,870 | 1993 | 50,093 | 1992 | 49,147 | 1991 | 48,425 | 1990 | 48,226 | 1989 | 48,341 | 1988 | 48,695 | 1987 | 49,353 | 1986 | 50,311 | 1985 | 51,434 | 1984 | 52,636 | 1983 | 53,879 | 1982 | 55,039 | 1981 | 56,054 | 1980 | 56,702 | 1979 | 57,038 | 1978 | 57,377 | 1977 | 57,731 | 1976 | 58,067 | 1975 | 58,421 | 1974 | 58,838 | 1973 | 59,318 | 1972 | 59,900 | 1971 | 60,587 | 1970 | 60,912 | 1969 | 60,791 | 1968 | 60,552 | 1967 | 60,170 | 1966 | 59,640 | 1965 | 58,996 | 1964 | 58,263 | 1963 | 57,450 | 1962 | 56,495 | 1961 | 55,420 | 1960 | 54,212 |
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