| Year | Value | | 2022 | 14,836,218 | | 2021 | 14,490,935 | | 2020 | 14,148,424 | | 2019 | 13,804,538 | | 2018 | 13,462,529 | | 2017 | 13,124,892 | | 2016 | 12,791,885 | | 2015 | 12,466,971 | | 2014 | 12,150,189 | | 2013 | 11,837,579 | | 2012 | 11,527,780 | | 2011 | 11,219,267 | | 2010 | 10,910,952 | | 2009 | 10,603,897 | | 2008 | 10,302,005 | | 2007 | 10,007,782 | | 2006 | 9,720,478 | | 2005 | 9,440,960 | | 2004 | 9,169,924 | | 2003 | 8,906,025 | | 2002 | 8,648,564 | | 2001 | 8,395,887 | | 2000 | 8,147,724 | | 1999 | 7,903,835 | | 1998 | 7,663,424 | | 1997 | 7,427,688 | | 1996 | 7,198,016 | | 1995 | 6,975,324 | | 1994 | 6,759,985 | | 1993 | 6,552,807 | | 1992 | 6,355,099 | | 1991 | 6,166,675 | | 1990 | 5,986,073 | | 1989 | 5,813,748 | | 1988 | 5,649,511 | | 1987 | 5,492,117 | | 1986 | 5,341,611 | | 1985 | 5,196,676 | | 1984 | 5,055,734 | | 1983 | 4,918,706 | | 1982 | 4,784,609 | | 1981 | 4,653,211 | | 1980 | 4,524,048 | | 1979 | 4,396,459 | | 1978 | 4,271,072 | | 1977 | 4,148,377 | | 1976 | 4,028,419 | | 1975 | 3,911,095 | | 1974 | 3,796,351 | | 1973 | 3,684,262 | | 1972 | 3,575,051 | | 1971 | 3,469,383 | | 1970 | 3,368,753 | | 1969 | 3,273,830 | | 1968 | 3,183,898 | | 1967 | 3,098,357 | | 1966 | 3,016,785 | | 1965 | 2,938,852 | | 1964 | 2,863,729 | | 1963 | 2,790,999 | | 1962 | 2,720,699 | | 1961 | 2,652,592 | | 1960 | 2,586,559 |
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