| Year | Value | | 2024 | 252,002 | | 2023 | 249,046 | | 2022 | 249,722 | | 2021 | 251,043 | | 2020 | 251,731 | | 2019 | 250,524 | | 2018 | 247,995 | | 2017 | 245,904 | | 2016 | 244,710 | | 2015 | 242,686 | | 2014 | 239,977 | | 2013 | 237,052 | | 2012 | 233,571 | | 2011 | 229,398 | | 2010 | 226,188 | | 2009 | 223,345 | | 2008 | 218,457 | | 2007 | 212,314 | | 2006 | 206,703 | | 2005 | 200,453 | | 2004 | 192,688 | | 2003 | 185,415 | | 2002 | 178,471 | | 2001 | 172,173 | | 2000 | 168,172 | | 1999 | 166,069 | | 1998 | 164,083 | | 1997 | 161,527 | | 1996 | 158,543 | | 1995 | 155,206 | | 1994 | 151,575 | | 1993 | 148,370 | | 1992 | 145,912 | | 1991 | 143,955 | | 1990 | 142,520 | | 1989 | 141,624 | | 1988 | 141,121 | | 1987 | 140,525 | | 1986 | 139,563 | | 1985 | 138,368 | | 1984 | 137,191 | | 1983 | 136,370 | | 1982 | 136,125 | | 1981 | 136,149 | | 1980 | 135,360 | | 1979 | 133,391 | | 1978 | 130,720 | | 1977 | 127,608 | | 1976 | 124,498 | | 1975 | 121,689 |
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