Year | Value | 2022 | 52,003 | 2021 | 52,978 | 2020 | 53,444 | 2019 | 52,755 | 2018 | 51,465 | 2017 | 50,008 | 2016 | 48,926 | 2015 | 48,162 | 2014 | 47,378 | 2013 | 46,801 | 2012 | 46,667 | 2011 | 46,927 | 2010 | 47,184 | 2009 | 47,412 | 2008 | 47,639 | 2007 | 47,894 | 2006 | 48,349 | 2005 | 48,891 | 2004 | 49,192 | 2003 | 49,235 | 2002 | 48,648 | 2001 | 47,651 | 2000 | 46,852 | 1999 | 45,377 | 1998 | 44,537 | 1997 | 45,832 | 1996 | 47,899 | 1995 | 50,229 | 1994 | 52,637 | 1993 | 55,130 | 1992 | 57,713 | 1991 | 59,295 | 1990 | 59,760 | 1989 | 59,905 | 1988 | 59,668 | 1987 | 59,318 | 1986 | 58,991 | 1985 | 58,373 | 1984 | 57,842 | 1983 | 57,581 | 1982 | 56,884 | 1981 | 55,533 | 1980 | 53,065 | 1979 | 49,553 | 1978 | 46,127 | 1977 | 44,058 | 1976 | 44,402 | 1975 | 46,521 | 1974 | 49,534 | 1973 | 52,972 | 1972 | 55,712 | 1971 | 56,087 | 1970 | 55,106 | 1969 | 53,673 | 1968 | 51,491 | 1967 | 49,889 | 1966 | 49,356 | 1965 | 49,627 | 1964 | 50,228 | 1963 | 50,796 | 1962 | 50,677 | 1961 | 49,393 | 1960 | 46,799 |
|