| Year | Value | | 2022 | 13,219,193 | | 2021 | 12,779,153 | | 2020 | 12,346,328 | | 2019 | 11,904,450 | | 2018 | 11,467,496 | | 2017 | 11,053,402 | | 2016 | 10,673,615 | | 2015 | 10,325,212 | | 2014 | 10,001,579 | | 2013 | 9,706,523 | | 2012 | 9,435,874 | | 2011 | 9,178,836 | | 2010 | 8,924,105 | | 2009 | 8,653,975 | | 2008 | 8,383,629 | | 2007 | 8,148,195 | | 2006 | 7,942,555 | | 2005 | 7,749,833 | | 2004 | 7,575,167 | | 2003 | 7,405,011 | | 2002 | 7,209,604 | | 2001 | 6,996,252 | | 2000 | 6,785,956 | | 1999 | 6,589,095 | | 1998 | 6,410,410 | | 1997 | 6,249,672 | | 1996 | 6,101,825 | | 1995 | 5,963,971 | | 1994 | 5,849,671 | | 1993 | 5,751,141 | | 1992 | 5,646,429 | | 1991 | 5,535,678 | | 1990 | 5,425,612 | | 1989 | 5,315,900 | | 1988 | 5,210,069 | | 1987 | 5,106,271 | | 1986 | 5,000,539 | | 1985 | 4,909,877 | | 1984 | 4,828,541 | | 1983 | 4,744,717 | | 1982 | 4,655,830 | | 1981 | 4,559,031 | | 1980 | 4,477,726 | | 1979 | 4,393,425 | | 1978 | 4,281,830 | | 1977 | 4,170,982 | | 1976 | 4,068,974 | | 1975 | 3,965,945 | | 1974 | 3,861,307 | | 1973 | 3,759,908 | | 1972 | 3,663,530 | | 1971 | 3,571,406 | | 1970 | 3,483,809 | | 1969 | 3,402,353 | | 1968 | 3,325,737 | | 1967 | 3,253,018 | | 1966 | 3,182,959 | | 1965 | 3,112,140 | | 1964 | 3,040,566 | | 1963 | 2,969,964 | | 1962 | 2,900,183 | | 1961 | 2,830,772 | | 1960 | 2,765,026 |
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