Year | Value | 2023 | 58,065 | 2022 | 58,023 | 2021 | 57,983 | 2020 | 57,966 | 2019 | 58,019 | 2018 | 58,097 | 2017 | 58,167 | 2016 | 58,263 | 2015 | 58,390 | 2014 | 58,505 | 2013 | 58,601 | 2012 | 58,748 | 2011 | 58,978 | 2010 | 59,285 | 2009 | 59,670 | 2008 | 60,209 | 2007 | 60,769 | 2006 | 61,031 | 2005 | 60,959 | 2004 | 60,530 | 2003 | 59,616 | 2002 | 58,185 | 2001 | 56,579 | 2000 | 55,210 | 1999 | 54,128 | 1998 | 53,250 | 1997 | 52,508 | 1996 | 51,931 | 1995 | 51,551 | 1994 | 51,681 | 1993 | 51,150 | 1992 | 52,571 | 1991 | 53,348 | 1990 | 49,260 | 1989 | 44,733 | 1988 | 41,658 | 1987 | 39,290 | 1986 | 37,076 | 1985 | 35,238 | 1984 | 33,838 | 1983 | 32,805 | 1982 | 31,939 | 1981 | 30,962 | 1980 | 29,653 | 1979 | 27,931 | 1978 | 25,868 | 1977 | 23,670 | 1976 | 21,570 | 1975 | 19,706 | 1974 | 18,135 |
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