| Year | Value | | 2022 | 7,481,379 | | 2021 | 7,387,153 | | 2020 | 7,315,753 | | 2019 | 7,257,303 | | 2018 | 7,205,647 | | 2017 | 7,149,808 | | 2016 | 7,078,994 | | 2015 | 6,998,924 | | 2014 | 6,914,111 | | 2013 | 6,832,428 | | 2012 | 6,767,044 | | 2011 | 6,702,706 | | 2010 | 6,623,527 | | 2009 | 6,540,770 | | 2008 | 6,473,966 | | 2007 | 6,388,177 | | 2006 | 6,281,374 | | 2005 | 6,171,507 | | 2004 | 6,045,595 | | 2003 | 5,922,768 | | 2002 | 5,809,580 | | 2001 | 5,685,830 | | 2000 | 5,528,557 | | 1999 | 5,345,542 | | 1998 | 5,151,892 | | 1997 | 4,945,717 | | 1996 | 4,736,543 | | 1995 | 4,534,902 | | 1994 | 4,347,870 | | 1993 | 4,184,921 | | 1992 | 4,049,363 | | 1991 | 3,952,618 | | 1990 | 3,889,494 | | 1989 | 3,837,125 | | 1988 | 3,783,260 | | 1987 | 3,723,429 | | 1986 | 3,656,579 | | 1985 | 3,582,783 | | 1984 | 3,500,091 | | 1983 | 3,404,383 | | 1982 | 3,292,651 | | 1981 | 3,163,368 | | 1980 | 3,016,621 | | 1979 | 2,852,567 | | 1978 | 2,688,869 | | 1977 | 2,554,037 | | 1976 | 2,447,615 | | 1975 | 2,363,886 | | 1974 | 2,331,617 | | 1973 | 2,333,041 | | 1972 | 2,319,158 | | 1971 | 2,296,834 | | 1970 | 2,267,978 | | 1969 | 2,225,357 | | 1968 | 2,174,890 | | 1967 | 2,121,160 | | 1966 | 2,068,693 | | 1965 | 2,016,322 | | 1964 | 1,963,789 | | 1963 | 1,913,102 | | 1962 | 1,863,767 | | 1961 | 1,817,198 | | 1960 | 1,775,173 |
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