Year | Value | 2022 | 34,736 | 2021 | 35,914 | 2020 | 37,766 | 2019 | 40,437 | 2018 | 43,234 | 2017 | 45,295 | 2016 | 46,708 | 2015 | 47,384 | 2014 | 47,273 | 2013 | 47,057 | 2012 | 46,718 | 2011 | 46,542 | 2010 | 46,564 | 2009 | 46,353 | 2008 | 45,967 | 2007 | 45,809 | 2006 | 46,053 | 2005 | 46,453 | 2004 | 46,865 | 2003 | 47,260 | 2002 | 47,598 | 2001 | 48,059 | 2000 | 48,674 | 1999 | 48,094 | 1998 | 47,333 | 1997 | 47,339 | 1996 | 47,003 | 1995 | 46,897 | 1994 | 47,500 | 1993 | 48,910 | 1992 | 51,352 | 1991 | 54,358 | 1990 | 56,957 | 1989 | 58,723 | 1988 | 59,566 | 1987 | 59,581 | 1986 | 58,948 | 1985 | 58,406 | 1984 | 58,321 | 1983 | 58,111 | 1982 | 57,999 | 1981 | 58,157 | 1980 | 57,709 | 1979 | 57,201 | 1978 | 56,919 | 1977 | 55,887 | 1976 | 54,248 | 1975 | 51,907 | 1974 | 48,696 | 1973 | 45,440 | 1972 | 43,456 | 1971 | 43,913 | 1970 | 45,910 | 1969 | 48,486 | 1968 | 51,329 | 1967 | 53,519 | 1966 | 53,930 | 1965 | 53,193 | 1964 | 52,087 | 1963 | 50,700 | 1962 | 50,082 | 1961 | 50,136 | 1960 | 51,160 |
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