Year | Value | 2023 | 231,907 | 2022 | 228,213 | 2021 | 230,703 | 2020 | 235,437 | 2019 | 242,534 | 2018 | 250,175 | 2017 | 260,731 | 2016 | 270,770 | 2015 | 278,104 | 2014 | 280,748 | 2013 | 279,730 | 2012 | 278,723 | 2011 | 277,589 | 2010 | 274,548 | 2009 | 271,308 | 2008 | 269,264 | 2007 | 268,200 | 2006 | 265,518 | 2005 | 261,174 | 2004 | 257,375 | 2003 | 252,643 | 2002 | 246,386 | 2001 | 240,939 | 2000 | 231,263 | 1999 | 216,229 | 1998 | 194,730 | 1997 | 167,708 | 1996 | 145,829 | 1995 | 133,392 | 1994 | 129,038 | 1993 | 140,824 | 1992 | 166,819 | 1991 | 191,948 | 1990 | 210,487 | 1989 | 219,856 | 1988 | 222,879 | 1987 | 222,144 | 1986 | 219,345 | 1985 | 216,170 | 1984 | 211,976 | 1983 | 207,984 | 1982 | 203,507 | 1981 | 197,747 | 1980 | 194,510 | 1979 | 189,277 | 1978 | 177,957 | 1977 | 165,866 | 1976 | 156,224 | 1975 | 144,886 | 1974 | 134,199 |
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