| Year | Value | | 2024 | 102,570 | | 2023 | 104,387 | | 2022 | 130,132 | | 2021 | 137,273 | | 2020 | 166,638 | | 2019 | 184,728 | | 2018 | 206,033 | | 2017 | 217,487 | | 2016 | 216,860 | | 2015 | 205,640 | | 2014 | 189,378 | | 2013 | 170,861 | | 2012 | 155,275 | | 2011 | 146,786 | | 2010 | 148,092 | | 2009 | 159,350 | | 2008 | 154,734 | | 2007 | 123,031 | | 2006 | 74,276 | | 2005 | 47,377 | | 2004 | 43,128 | | 2003 | 43,096 | | 2002 | 42,565 | | 2001 | 40,797 | | 2000 | 38,161 | | 1999 | 35,027 | | 1998 | 31,749 | | 1997 | 29,052 | | 1996 | 28,873 | | 1995 | 30,361 | | 1994 | 31,197 | | 1993 | 31,279 | | 1992 | 30,624 | | 1991 | 29,402 | | 1990 | 27,983 | | 1989 | 26,779 | | 1988 | 26,043 | | 1987 | 25,914 | | 1986 | 26,508 | | 1985 | 27,823 | | 1984 | 29,240 | | 1983 | 30,138 | | 1982 | 30,409 | | 1981 | 29,995 | | 1980 | 28,872 | | 1979 | 27,092 | | 1978 | 24,816 | | 1977 | 22,238 | | 1976 | 19,539 | | 1975 | 16,863 |
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