Year | Value | 2022 | 51,020 | 2021 | 51,123 | 2020 | 51,199 | 2019 | 51,288 | 2018 | 51,425 | 2017 | 51,523 | 2016 | 51,704 | 2015 | 51,944 | 2014 | 52,139 | 2013 | 52,397 | 2012 | 52,710 | 2011 | 53,026 | 2010 | 53,341 | 2009 | 53,620 | 2008 | 53,871 | 2007 | 54,143 | 2006 | 54,464 | 2005 | 54,797 | 2004 | 55,114 | 2003 | 55,395 | 2002 | 55,587 | 2001 | 55,700 | 2000 | 55,810 | 1999 | 55,925 | 1998 | 56,045 | 1997 | 56,148 | 1996 | 56,203 | 1995 | 56,192 | 1994 | 56,127 | 1993 | 56,017 | 1992 | 55,862 | 1991 | 55,723 | 1990 | 55,609 | 1989 | 55,479 | 1988 | 55,325 | 1987 | 55,144 | 1986 | 54,929 | 1985 | 54,663 | 1984 | 54,346 | 1983 | 53,987 | 1982 | 53,594 | 1981 | 53,168 | 1980 | 52,880 | 1979 | 52,755 | 1978 | 52,602 | 1977 | 52,388 | 1976 | 52,144 | 1975 | 51,880 | 1974 | 51,565 | 1973 | 51,196 | 1972 | 50,802 | 1971 | 50,380 | 1970 | 49,907 | 1969 | 49,389 | 1968 | 48,854 | 1967 | 48,317 | 1966 | 47,755 | 1965 | 47,169 | 1964 | 46,599 | 1963 | 46,042 | 1962 | 45,462 | 1961 | 44,850 | 1960 | 44,238 |
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