Year | Value | 2022 | 17,884,631 | 2021 | 17,167,613 | 2020 | 16,428,068 | 2019 | 15,621,231 | 2018 | 14,943,933 | 2017 | 14,416,795 | 2016 | 13,933,001 | 2015 | 13,508,290 | 2014 | 13,141,527 | 2013 | 12,830,432 | 2012 | 12,557,747 | 2011 | 12,291,576 | 2010 | 12,006,386 | 2009 | 11,697,269 | 2008 | 11,361,305 | 2007 | 11,003,563 | 2006 | 10,652,151 | 2005 | 10,322,638 | 2004 | 10,007,313 | 2003 | 9,692,904 | 2002 | 9,381,686 | 2001 | 9,080,619 | 2000 | 8,792,685 | 1999 | 8,513,140 | 1998 | 8,244,712 | 1997 | 7,994,205 | 1996 | 7,761,868 | 1995 | 7,542,496 | 1994 | 7,333,188 | 1993 | 7,135,241 | 1992 | 6,945,097 | 1991 | 6,761,851 | 1990 | 6,585,571 | 1989 | 6,413,016 | 1988 | 6,240,933 | 1987 | 6,071,944 | 1986 | 5,912,640 | 1985 | 5,764,152 | 1984 | 5,625,323 | 1983 | 5,499,278 | 1982 | 5,379,978 | 1981 | 5,251,731 | 1980 | 5,102,145 | 1979 | 4,927,890 | 1978 | 4,725,632 | 1977 | 4,507,365 | 1976 | 4,305,966 | 1975 | 4,143,434 | 1974 | 4,023,463 | 1973 | 3,952,857 | 1972 | 3,918,242 | 1971 | 3,886,936 | 1970 | 3,818,074 | 1969 | 3,694,615 | 1968 | 3,517,039 | 1967 | 3,304,414 | 1966 | 3,116,839 | 1965 | 2,989,466 | 1964 | 2,917,659 | 1963 | 2,910,254 | 1962 | 2,953,673 | 1961 | 2,978,814 | 1960 | 2,945,746 |
|