| Year | Value | | 2022 | 13,992,014 | | 2021 | 13,634,397 | | 2020 | 13,280,460 | | 2019 | 12,926,852 | | 2018 | 12,575,513 | | 2017 | 12,235,344 | | 2016 | 11,896,708 | | 2015 | 11,548,794 | | 2014 | 11,193,372 | | 2013 | 10,861,379 | | 2012 | 10,562,805 | | 2011 | 10,272,225 | | 2010 | 9,987,915 | | 2009 | 9,709,582 | | 2008 | 9,439,512 | | 2007 | 9,177,878 | | 2006 | 8,928,603 | | 2005 | 8,691,569 | | 2004 | 8,459,566 | | 2003 | 8,232,772 | | 2002 | 8,013,386 | | 2001 | 7,803,427 | | 2000 | 7,602,707 | | 1999 | 7,406,268 | | 1998 | 7,213,909 | | 1997 | 7,027,135 | | 1996 | 6,844,174 | | 1995 | 6,662,381 | | 1994 | 6,481,175 | | 1993 | 6,300,581 | | 1992 | 6,121,989 | | 1991 | 5,947,026 | | 1990 | 5,774,111 | | 1989 | 5,604,349 | | 1988 | 5,440,548 | | 1987 | 5,278,837 | | 1986 | 5,119,583 | | 1985 | 4,966,849 | | 1984 | 4,820,322 | | 1983 | 4,687,501 | | 1982 | 4,591,728 | | 1981 | 4,483,675 | | 1980 | 4,329,782 | | 1979 | 4,192,051 | | 1978 | 4,077,495 | | 1977 | 3,969,791 | | 1976 | 3,870,947 | | 1975 | 3,771,255 | | 1974 | 3,670,610 | | 1973 | 3,573,319 | | 1972 | 3,479,404 | | 1971 | 3,389,095 | | 1970 | 3,302,654 | | 1969 | 3,220,218 | | 1968 | 3,141,465 | | 1967 | 3,066,162 | | 1966 | 2,994,139 | | 1965 | 2,925,090 | | 1964 | 2,858,830 | | 1963 | 2,795,102 | | 1962 | 2,733,790 | | 1961 | 2,675,878 | | 1960 | 2,621,418 |
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