| Year | Value | | 2023 | 980,276 | | 2022 | 954,743 | | 2021 | 929,696 | | 2020 | 898,828 | | 2019 | 860,380 | | 2018 | 825,548 | | 2017 | 803,873 | | 2016 | 785,422 | | 2015 | 767,965 | | 2014 | 750,609 | | 2013 | 728,274 | | 2012 | 701,856 | | 2011 | 673,585 | | 2010 | 643,241 | | 2009 | 610,163 | | 2008 | 574,171 | | 2007 | 534,789 | | 2006 | 502,266 | | 2005 | 472,508 | | 2004 | 448,848 | | 2003 | 430,080 | | 2002 | 415,192 | | 2001 | 403,094 | | 2000 | 392,677 | | 1999 | 382,996 | | 1998 | 373,194 | | 1997 | 363,071 | | 1996 | 352,953 | | 1995 | 343,193 | | 1994 | 334,854 | | 1993 | 327,895 | | 1992 | 321,225 | | 1991 | 314,651 | | 1990 | 307,904 | | 1989 | 300,777 | | 1988 | 293,316 | | 1987 | 285,783 | | 1986 | 278,296 | | 1985 | 270,768 | | 1984 | 263,351 | | 1983 | 256,245 | | 1982 | 249,795 | | 1981 | 244,501 | | 1980 | 239,990 | | 1979 | 234,850 | | 1978 | 229,384 | | 1977 | 224,792 | | 1976 | 221,056 | | 1975 | 213,487 | | 1974 | 201,423 |
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