| Year | Value | | 2023 | 878,889 | | 2022 | 860,013 | | 2021 | 885,030 | | 2020 | 949,385 | | 2019 | 985,205 | | 2018 | 999,971 | | 2017 | 1,024,032 | | 2016 | 1,060,662 | | 2015 | 1,111,183 | | 2014 | 1,174,558 | | 2013 | 1,247,245 | | 2012 | 1,323,866 | | 2011 | 1,398,124 | | 2010 | 1,463,846 | | 2009 | 1,394,585 | | 2008 | 1,159,059 | | 2007 | 888,759 | | 2006 | 658,460 | | 2005 | 525,271 | | 2004 | 471,298 | | 2003 | 434,297 | | 2002 | 394,018 | | 2001 | 355,039 | | 2000 | 321,016 | | 1999 | 294,122 | | 1998 | 274,809 | | 1997 | 262,173 | | 1996 | 254,128 | | 1995 | 243,525 | | 1994 | 226,193 | | 1993 | 205,853 | | 1992 | 186,157 | | 1991 | 169,840 | | 1990 | 158,613 | | 1989 | 152,537 | | 1988 | 150,353 | | 1987 | 150,505 | | 1986 | 151,379 | | 1985 | 150,280 | | 1984 | 147,536 | | 1983 | 146,127 | | 1982 | 146,827 | | 1981 | 148,908 | | 1980 | 142,093 | | 1979 | 125,392 | | 1978 | 108,667 | | 1977 | 93,637 | | 1976 | 80,626 | | 1975 | 69,393 | | 1974 | 58,931 |
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