Year | Value | 2023 | 54,305 | 2022 | 49,078 | 2021 | 47,821 | 2020 | 51,409 | 2019 | 58,165 | 2018 | 65,879 | 2017 | 73,194 | 2016 | 78,383 | 2015 | 80,727 | 2014 | 80,398 | 2013 | 77,870 | 2012 | 74,032 | 2011 | 69,970 | 2010 | 66,428 | 2009 | 63,535 | 2008 | 61,382 | 2007 | 60,031 | 2006 | 58,580 | 2005 | 56,067 | 2004 | 52,607 | 2003 | 48,719 | 2002 | 44,899 | 2001 | 41,886 | 2000 | 39,843 | 1999 | 37,907 | 1998 | 36,689 | 1997 | 36,708 | 1996 | 36,950 | 1995 | 37,191 | 1994 | 37,765 | 1993 | 38,474 | 1992 | 39,506 | 1991 | 41,460 | 1990 | 43,760 | 1989 | 45,334 | 1988 | 46,036 | 1987 | 46,070 | 1986 | 45,448 | 1985 | 44,294 | 1984 | 42,452 | 1983 | 40,262 | 1982 | 38,772 | 1981 | 38,652 | 1980 | 39,875 | 1979 | 41,780 | 1978 | 41,475 | 1977 | 38,367 | 1976 | 34,590 | 1975 | 31,965 | 1974 | 30,488 |
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