| Year | Value | | 2024 | 79,841 | | 2023 | 78,654 | | 2022 | 76,850 | | 2021 | 75,125 | | 2020 | 73,998 | | 2019 | 72,632 | | 2018 | 70,899 | | 2017 | 69,239 | | 2016 | 67,440 | | 2015 | 65,510 | | 2014 | 63,466 | | 2013 | 61,330 | | 2012 | 59,154 | | 2011 | 57,015 | | 2010 | 54,986 | | 2009 | 53,003 | | 2008 | 51,015 | | 2007 | 49,075 | | 2006 | 47,218 | | 2005 | 45,445 | | 2004 | 43,821 | | 2003 | 42,340 | | 2002 | 40,913 | | 2001 | 39,520 | | 2000 | 38,165 | | 1999 | 36,858 | | 1998 | 35,596 | | 1997 | 34,383 | | 1996 | 33,224 | | 1995 | 32,091 | | 1994 | 30,989 | | 1993 | 29,942 | | 1992 | 28,943 | | 1991 | 27,988 | | 1990 | 27,059 | | 1989 | 26,154 | | 1988 | 25,293 | | 1987 | 24,460 | | 1986 | 23,683 | | 1985 | 22,936 | | 1984 | 22,184 | | 1983 | 21,461 | | 1982 | 20,774 | | 1981 | 20,129 | | 1980 | 19,534 | | 1979 | 18,996 | | 1978 | 18,524 | | 1977 | 18,102 | | 1976 | 17,683 | | 1975 | 17,243 |
|