Year | Value | 2022 | 34,017 | 2021 | 34,871 | 2020 | 35,994 | 2019 | 37,125 | 2018 | 38,317 | 2017 | 39,678 | 2016 | 41,217 | 2015 | 42,899 | 2014 | 44,634 | 2013 | 46,296 | 2012 | 47,740 | 2011 | 48,789 | 2010 | 48,949 | 2009 | 48,284 | 2008 | 47,338 | 2007 | 46,267 | 2006 | 45,203 | 2005 | 44,242 | 2004 | 43,429 | 2003 | 42,734 | 2002 | 42,067 | 2001 | 41,047 | 2000 | 39,445 | 1999 | 37,562 | 1998 | 35,751 | 1997 | 34,285 | 1996 | 33,346 | 1995 | 32,968 | 1994 | 33,035 | 1993 | 33,324 | 1992 | 33,407 | 1991 | 33,022 | 1990 | 32,346 | 1989 | 31,622 | 1988 | 31,065 | 1987 | 30,859 | 1986 | 31,080 | 1985 | 31,660 | 1984 | 32,435 | 1983 | 33,176 | 1982 | 33,585 | 1981 | 33,504 | 1980 | 33,089 | 1979 | 32,570 | 1978 | 32,028 | 1977 | 31,416 | 1976 | 30,626 | 1975 | 29,775 | 1974 | 29,231 | 1973 | 28,782 | 1972 | 28,439 | 1971 | 28,426 | 1970 | 28,380 | 1969 | 28,033 | 1968 | 27,278 | 1967 | 26,186 | 1966 | 25,016 | 1965 | 24,144 | 1964 | 23,809 | 1963 | 24,005 | 1962 | 24,551 | 1961 | 25,138 | 1960 | 25,150 |
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