Year | Value | 2022 | 60,049 | 2021 | 59,233 | 2020 | 58,236 | 2019 | 57,279 | 2018 | 55,955 | 2017 | 54,380 | 2016 | 53,384 | 2015 | 52,607 | 2014 | 51,757 | 2013 | 51,505 | 2012 | 51,371 | 2011 | 50,681 | 2010 | 49,871 | 2009 | 49,007 | 2008 | 48,256 | 2007 | 48,210 | 2006 | 49,356 | 2005 | 51,592 | 2004 | 54,326 | 2003 | 57,028 | 2002 | 59,205 | 2001 | 60,569 | 2000 | 60,951 | 1999 | 60,205 | 1998 | 58,730 | 1997 | 57,336 | 1996 | 56,577 | 1995 | 56,870 | 1994 | 58,358 | 1993 | 60,413 | 1992 | 62,096 | 1991 | 62,104 | 1990 | 60,140 | 1989 | 56,997 | 1988 | 52,920 | 1987 | 48,528 | 1986 | 44,850 | 1985 | 42,230 | 1984 | 40,196 | 1983 | 38,232 | 1982 | 36,182 | 1981 | 34,363 | 1980 | 33,511 | 1979 | 34,095 | 1978 | 36,015 | 1977 | 38,912 | 1976 | 42,220 | 1975 | 45,081 | 1974 | 46,897 | 1973 | 47,834 | 1972 | 48,472 | 1971 | 49,252 | 1970 | 50,225 | 1969 | 51,113 | 1968 | 51,534 | 1967 | 51,145 | 1966 | 49,845 | 1965 | 47,690 | 1964 | 44,866 | 1963 | 41,678 | 1962 | 38,548 | 1961 | 35,915 | 1960 | 33,947 |
|