| Year | Value | | 2022 | 8,605,718 | | 2021 | 8,420,641 | | 2020 | 8,233,970 | | 2019 | 8,046,828 | | 2018 | 7,861,281 | | 2017 | 7,677,565 | | 2016 | 7,493,913 | | 2015 | 7,314,773 | | 2014 | 7,140,688 | | 2013 | 6,964,859 | | 2012 | 6,788,587 | | 2011 | 6,612,385 | | 2010 | 6,436,698 | | 2009 | 6,259,842 | | 2008 | 6,090,860 | | 2007 | 5,939,163 | | 2006 | 5,809,774 | | 2005 | 5,683,334 | | 2004 | 5,533,329 | | 2003 | 5,350,907 | | 2002 | 5,140,113 | | 2001 | 4,857,096 | | 2000 | 4,584,067 | | 1999 | 4,475,145 | | 1998 | 4,449,975 | | 1997 | 4,405,028 | | 1996 | 4,347,370 | | 1995 | 4,324,149 | | 1994 | 4,314,953 | | 1993 | 4,295,689 | | 1992 | 4,301,566 | | 1991 | 4,378,169 | | 1990 | 4,325,388 | | 1989 | 4,159,163 | | 1988 | 4,056,215 | | 1987 | 3,947,865 | | 1986 | 3,842,917 | | 1985 | 3,749,419 | | 1984 | 3,666,262 | | 1983 | 3,585,773 | | 1982 | 3,509,197 | | 1981 | 3,437,108 | | 1980 | 3,367,477 | | 1979 | 3,300,032 | | 1978 | 3,235,170 | | 1977 | 3,172,195 | | 1976 | 3,112,863 | | 1975 | 3,055,916 | | 1974 | 2,998,843 | | 1973 | 2,942,333 | | 1972 | 2,886,642 | | 1971 | 2,832,392 | | 1970 | 2,778,557 | | 1969 | 2,724,901 | | 1968 | 2,672,370 | | 1967 | 2,620,396 | | 1966 | 2,569,736 | | 1965 | 2,520,576 | | 1964 | 2,472,686 | | 1963 | 2,426,750 | | 1962 | 2,382,914 | | 1961 | 2,341,065 | | 1960 | 2,301,310 |
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