Year | Value | 2023 | 30,389 | 2022 | 28,087 | 2021 | 27,843 | 2020 | 30,126 | 2019 | 34,081 | 2018 | 39,053 | 2017 | 43,764 | 2016 | 47,040 | 2015 | 48,290 | 2014 | 47,829 | 2013 | 46,418 | 2012 | 44,735 | 2011 | 43,226 | 2010 | 42,260 | 2009 | 42,560 | 2008 | 44,050 | 2007 | 45,432 | 2006 | 46,333 | 2005 | 46,133 | 2004 | 44,673 | 2003 | 41,387 | 2002 | 36,384 | 2001 | 31,124 | 2000 | 26,575 | 1999 | 22,866 | 1998 | 20,220 | 1997 | 18,697 | 1996 | 18,094 | 1995 | 18,525 | 1994 | 20,238 | 1993 | 22,311 | 1992 | 24,154 | 1991 | 26,118 | 1990 | 27,753 | 1989 | 28,148 | 1988 | 27,805 | 1987 | 27,785 | 1986 | 27,910 | 1985 | 27,936 | 1984 | 27,780 | 1983 | 27,411 | 1982 | 26,888 | 1981 | 26,461 | 1980 | 26,143 | 1979 | 25,617 | 1978 | 24,954 | 1977 | 24,296 | 1976 | 23,512 | 1975 | 22,787 |
|