| Year | Value | | 2022 | 1,897,945 | | 2021 | 1,847,527 | | 2020 | 1,803,566 | | 2019 | 1,757,420 | | 2018 | 1,709,293 | | 2017 | 1,661,725 | | 2016 | 1,615,567 | | 2015 | 1,570,929 | | 2014 | 1,522,313 | | 2013 | 1,474,568 | | 2012 | 1,440,359 | | 2011 | 1,417,425 | | 2010 | 1,399,669 | | 2009 | 1,390,492 | | 2008 | 1,382,698 | | 2007 | 1,361,764 | | 2006 | 1,330,102 | | 2005 | 1,295,447 | | 2004 | 1,261,169 | | 2003 | 1,228,930 | | 2002 | 1,198,949 | | 2001 | 1,170,108 | | 2000 | 1,141,439 | | 1999 | 1,113,185 | | 1998 | 1,085,367 | | 1997 | 1,058,213 | | 1996 | 1,032,617 | | 1995 | 1,008,662 | | 1994 | 985,556 | | 1993 | 962,769 | | 1992 | 940,684 | | 1991 | 919,499 | | 1990 | 898,772 | | 1989 | 878,293 | | 1988 | 858,210 | | 1987 | 838,538 | | 1986 | 819,139 | | 1985 | 799,860 | | 1984 | 780,318 | | 1983 | 763,489 | | 1982 | 746,574 | | 1981 | 726,178 | | 1980 | 704,978 | | 1979 | 683,155 | | 1978 | 660,753 | | 1977 | 638,229 | | 1976 | 616,702 | | 1975 | 597,121 | | 1974 | 579,641 | | 1973 | 564,375 | | 1972 | 550,996 | | 1971 | 538,290 | | 1970 | 525,695 | | 1969 | 513,623 | | 1968 | 501,813 | | 1967 | 490,788 | | 1966 | 481,088 | | 1965 | 473,208 | | 1964 | 467,985 | | 1963 | 465,385 | | 1962 | 464,505 | | 1961 | 463,222 | | 1960 | 459,947 |
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