| Year | Value | | 2022 | 821,555 | | 2021 | 797,380 | | 2020 | 775,702 | | 2019 | 757,059 | | 2018 | 741,920 | | 2017 | 727,689 | | 2016 | 714,756 | | 2015 | 704,838 | | 2014 | 696,004 | | 2013 | 686,656 | | 2012 | 677,443 | | 2011 | 666,079 | | 2010 | 649,104 | | 2009 | 626,264 | | 2008 | 597,706 | | 2007 | 567,093 | | 2006 | 537,461 | | 2005 | 508,851 | | 2004 | 482,816 | | 2003 | 460,639 | | 2002 | 442,424 | | 2001 | 428,484 | | 2000 | 419,361 | | 1999 | 415,484 | | 1998 | 412,426 | | 1997 | 408,473 | | 1996 | 405,735 | | 1995 | 402,903 | | 1994 | 407,197 | | 1993 | 413,291 | | 1992 | 406,170 | | 1991 | 390,905 | | 1990 | 373,218 | | 1989 | 351,178 | | 1988 | 326,038 | | 1987 | 303,690 | | 1986 | 286,163 | | 1985 | 270,425 | | 1984 | 255,554 | | 1983 | 242,118 | | 1982 | 230,306 | | 1981 | 219,852 | | 1980 | 210,720 | | 1979 | 205,595 | | 1978 | 203,505 | | 1977 | 202,256 | | 1976 | 203,152 | | 1975 | 205,301 | | 1974 | 204,913 | | 1973 | 202,281 | | 1972 | 198,533 | | 1971 | 192,879 | | 1970 | 187,131 | | 1969 | 181,771 | | 1968 | 176,967 | | 1967 | 172,539 | | 1966 | 168,225 | | 1965 | 163,924 | | 1964 | 159,626 | | 1963 | 155,230 | | 1962 | 150,744 | | 1961 | 146,450 | | 1960 | 142,513 |
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