| Year | Value | | 2022 | 747,287 | | 2021 | 749,986 | | 2020 | 749,987 | | 2019 | 749,894 | | 2018 | 749,310 | | 2017 | 748,295 | | 2016 | 746,748 | | 2015 | 745,099 | | 2014 | 742,713 | | 2013 | 739,972 | | 2012 | 736,801 | | 2011 | 733,358 | | 2010 | 730,796 | | 2009 | 727,675 | | 2008 | 724,365 | | 2007 | 720,361 | | 2006 | 715,718 | | 2005 | 711,012 | | 2004 | 705,459 | | 2003 | 699,690 | | 2002 | 693,296 | | 2001 | 687,159 | | 2000 | 680,434 | | 1999 | 672,335 | | 1998 | 662,415 | | 1997 | 654,086 | | 1996 | 644,552 | | 1995 | 636,613 | | 1994 | 629,793 | | 1993 | 619,687 | | 1992 | 611,050 | | 1991 | 601,736 | | 1990 | 593,973 | | 1989 | 593,079 | | 1988 | 591,840 | | 1987 | 591,054 | | 1986 | 589,878 | | 1985 | 588,590 | | 1984 | 586,967 | | 1983 | 583,976 | | 1982 | 576,486 | | 1981 | 567,354 | | 1980 | 556,912 | | 1979 | 545,530 | | 1978 | 534,083 | | 1977 | 525,140 | | 1976 | 514,678 | | 1975 | 504,488 | | 1974 | 494,671 | | 1973 | 485,328 | | 1972 | 476,298 | | 1971 | 475,625 | | 1970 | 474,487 | | 1969 | 472,901 | | 1968 | 470,840 | | 1967 | 468,241 | | 1966 | 465,009 | | 1965 | 461,084 | | 1964 | 456,372 | | 1963 | 450,826 | | 1962 | 444,336 | | 1961 | 436,849 | | 1960 | 439,093 |
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