| Year | Value | | 2023 | 772,659 | | 2022 | 731,567 | | 2021 | 698,447 | | 2020 | 672,855 | | 2019 | 653,622 | | 2018 | 637,760 | | 2017 | 623,467 | | 2016 | 608,831 | | 2015 | 592,153 | | 2014 | 573,930 | | 2013 | 555,300 | | 2012 | 536,177 | | 2011 | 516,244 | | 2010 | 495,468 | | 2009 | 474,011 | | 2008 | 452,159 | | 2007 | 430,352 | | 2006 | 409,542 | | 2005 | 389,054 | | 2004 | 366,921 | | 2003 | 343,114 | | 2002 | 318,533 | | 2001 | 294,912 | | 2000 | 273,528 | | 1999 | 252,781 | | 1998 | 233,617 | | 1997 | 218,524 | | 1996 | 206,223 | | 1995 | 195,503 | | 1994 | 186,575 | | 1993 | 178,629 | | 1992 | 170,845 | | 1991 | 163,716 | | 1990 | 157,368 | | 1989 | 151,679 | | 1988 | 146,395 | | 1987 | 141,145 | | 1986 | 136,234 | | 1985 | 131,726 | | 1984 | 127,421 | | 1983 | 123,190 | | 1982 | 119,059 | | 1981 | 115,003 | | 1980 | 110,940 | | 1979 | 106,880 | | 1978 | 102,905 | | 1977 | 98,955 | | 1976 | 94,924 | | 1975 | 90,699 | | 1974 | 86,215 |
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