| Year | Value | | 2022 | 929,766 | | 2021 | 924,610 | | 2020 | 920,422 | | 2019 | 918,465 | | 2018 | 918,996 | | 2017 | 919,019 | | 2016 | 918,371 | | 2015 | 917,200 | | 2014 | 915,560 | | 2013 | 913,453 | | 2012 | 911,059 | | 2011 | 908,355 | | 2010 | 905,169 | | 2009 | 901,383 | | 2008 | 896,731 | | 2007 | 890,648 | | 2006 | 883,083 | | 2005 | 874,923 | | 2004 | 866,694 | | 2003 | 858,306 | | 2002 | 849,891 | | 2001 | 841,320 | | 2000 | 832,509 | | 1999 | 823,422 | | 1998 | 813,947 | | 1997 | 804,572 | | 1996 | 796,538 | | 1995 | 792,246 | | 1994 | 790,803 | | 1993 | 789,198 | | 1992 | 786,859 | | 1991 | 784,832 | | 1990 | 780,430 | | 1989 | 772,704 | | 1988 | 764,370 | | 1987 | 754,778 | | 1986 | 742,658 | | 1985 | 727,461 | | 1984 | 710,561 | | 1983 | 693,593 | | 1982 | 676,967 | | 1981 | 660,630 | | 1980 | 644,582 | | 1979 | 628,859 | | 1978 | 613,611 | | 1977 | 599,289 | | 1976 | 586,607 | | 1975 | 575,804 | | 1974 | 566,296 | | 1973 | 557,244 | | 1972 | 547,918 | | 1971 | 538,000 | | 1970 | 527,634 | | 1969 | 516,952 | | 1968 | 505,979 | | 1967 | 494,632 | | 1966 | 482,358 | | 1965 | 469,010 | | 1964 | 455,214 | | 1963 | 441,385 | | 1962 | 427,695 | | 1961 | 414,534 | | 1960 | 401,841 |
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