Year | Value | 2022 | 47,546 | 2021 | 47,520 | 2020 | 47,542 | 2019 | 48,619 | 2018 | 48,941 | 2017 | 48,939 | 2016 | 50,449 | 2015 | 52,201 | 2014 | 54,169 | 2013 | 56,418 | 2012 | 58,948 | 2011 | 61,732 | 2010 | 64,628 | 2009 | 67,124 | 2008 | 69,033 | 2007 | 70,388 | 2006 | 71,005 | 2005 | 70,799 | 2004 | 70,008 | 2003 | 68,648 | 2002 | 66,573 | 2001 | 64,114 | 2000 | 61,692 | 1999 | 59,580 | 1998 | 57,989 | 1997 | 56,997 | 1996 | 56,212 | 1995 | 55,278 | 1994 | 54,190 | 1993 | 53,061 | 1992 | 52,207 | 1991 | 52,177 | 1990 | 53,236 | 1989 | 55,063 | 1988 | 57,262 | 1987 | 59,524 | 1986 | 61,418 | 1985 | 62,623 | 1984 | 63,247 | 1983 | 63,234 | 1982 | 62,458 | 1981 | 61,303 | 1980 | 60,322 | 1979 | 59,765 | 1978 | 59,248 | 1977 | 58,364 | 1976 | 57,109 | 1975 | 55,375 | 1974 | 53,082 | 1973 | 50,684 | 1972 | 48,554 | 1971 | 46,499 | 1970 | 44,384 | 1969 | 42,525 | 1968 | 41,051 | 1967 | 39,745 | 1966 | 38,537 | 1965 | 37,399 | 1964 | 36,300 | 1963 | 35,232 | 1962 | 34,184 | 1961 | 33,178 | 1960 | 32,114 |
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