Year | Value | 2022 | 40,626 | 2021 | 39,939 | 2020 | 39,479 | 2019 | 39,318 | 2018 | 39,369 | 2017 | 39,571 | 2016 | 40,021 | 2015 | 40,656 | 2014 | 41,357 | 2013 | 42,118 | 2012 | 42,912 | 2011 | 43,646 | 2010 | 44,294 | 2009 | 44,850 | 2008 | 45,275 | 2007 | 45,565 | 2006 | 45,672 | 2005 | 45,749 | 2004 | 46,006 | 2003 | 46,312 | 2002 | 46,549 | 2001 | 46,755 | 2000 | 46,807 | 1999 | 46,548 | 1998 | 46,022 | 1997 | 45,266 | 1996 | 44,262 | 1995 | 43,103 | 1994 | 41,822 | 1993 | 40,510 | 1992 | 39,441 | 1991 | 38,794 | 1990 | 38,491 | 1989 | 38,521 | 1988 | 38,845 | 1987 | 39,167 | 1986 | 39,391 | 1985 | 39,538 | 1984 | 39,650 | 1983 | 39,783 | 1982 | 39,932 | 1981 | 39,832 | 1980 | 39,474 | 1979 | 39,031 | 1978 | 38,419 | 1977 | 37,624 | 1976 | 36,840 | 1975 | 36,048 | 1974 | 35,050 | 1973 | 33,849 | 1972 | 32,524 | 1971 | 31,090 | 1970 | 29,554 | 1969 | 28,261 | 1968 | 27,281 | 1967 | 26,358 | 1966 | 25,552 | 1965 | 24,871 | 1964 | 24,003 | 1963 | 23,011 | 1962 | 22,170 | 1961 | 21,433 | 1960 | 20,795 |
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