| Year | Value | | 2022 | 758,838 | | 2021 | 753,941 | | 2020 | 753,206 | | 2019 | 754,118 | | 2018 | 759,125 | | 2017 | 761,131 | | 2016 | 754,537 | | 2015 | 741,683 | | 2014 | 727,082 | | 2013 | 712,870 | | 2012 | 698,009 | | 2011 | 681,422 | | 2010 | 662,943 | | 2009 | 642,241 | | 2008 | 618,986 | | 2007 | 594,077 | | 2006 | 568,791 | | 2005 | 543,420 | | 2004 | 518,630 | | 2003 | 494,585 | | 2002 | 471,813 | | 2001 | 451,727 | | 2000 | 433,823 | | 1999 | 416,752 | | 1998 | 400,773 | | 1997 | 385,515 | | 1996 | 370,148 | | 1995 | 355,452 | | 1994 | 341,706 | | 1993 | 329,093 | | 1992 | 317,617 | | 1991 | 307,166 | | 1990 | 297,588 | | 1989 | 288,792 | | 1988 | 280,604 | | 1987 | 272,828 | | 1986 | 265,374 | | 1985 | 258,199 | | 1984 | 251,207 | | 1983 | 244,311 | | 1982 | 237,544 | | 1981 | 230,916 | | 1980 | 224,434 | | 1979 | 218,050 | | 1978 | 211,698 | | 1977 | 205,378 | | 1976 | 199,078 | | 1975 | 192,823 | | 1974 | 186,659 | | 1973 | 180,611 | | 1972 | 174,689 | | 1971 | 168,894 | | 1970 | 163,249 | | 1969 | 157,800 | | 1968 | 152,532 | | 1967 | 147,439 | | 1966 | 142,585 | | 1965 | 137,996 | | 1964 | 133,668 | | 1963 | 129,595 | | 1962 | 125,741 | | 1961 | 121,985 | | 1960 | 118,253 |
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