| Year | Value | | 2022 | 12,356,117 | | 2021 | 12,262,946 | | 2020 | 12,161,723 | | 2019 | 12,049,314 | | 2018 | 11,933,041 | | 2017 | 11,811,443 | | 2016 | 11,685,667 | | 2015 | 11,557,779 | | 2014 | 11,428,948 | | 2013 | 11,300,284 | | 2012 | 11,174,383 | | 2011 | 11,032,528 | | 2010 | 10,895,063 | | 2009 | 10,784,504 | | 2008 | 10,680,380 | | 2007 | 10,580,395 | | 2006 | 10,483,558 | | 2005 | 10,388,344 | | 2004 | 10,292,225 | | 2003 | 10,193,798 | | 2002 | 10,094,561 | | 2001 | 9,995,123 | | 2000 | 9,893,316 | | 1999 | 9,788,067 | | 1998 | 9,677,148 | | 1997 | 9,557,948 | | 1996 | 9,430,550 | | 1995 | 9,294,102 | | 1994 | 9,143,141 | | 1993 | 8,977,173 | | 1992 | 8,802,540 | | 1991 | 8,622,853 | | 1990 | 8,440,023 | | 1989 | 8,256,396 | | 1988 | 8,068,788 | | 1987 | 7,874,302 | | 1986 | 7,675,499 | | 1985 | 7,476,092 | | 1984 | 7,279,157 | | 1983 | 7,091,270 | | 1982 | 6,914,963 | | 1981 | 6,744,050 | | 1980 | 6,578,156 | | 1979 | 6,416,191 | | 1978 | 6,254,876 | | 1977 | 6,092,769 | | 1976 | 5,929,998 | | 1975 | 5,769,074 | | 1974 | 5,613,116 | | 1973 | 5,463,650 | | 1972 | 5,320,148 | | 1971 | 5,182,040 | | 1970 | 5,047,404 | | 1969 | 4,915,162 | | 1968 | 4,785,003 | | 1967 | 4,661,271 | | 1966 | 4,548,972 | | 1965 | 4,457,282 | | 1964 | 4,389,417 | | 1963 | 4,332,926 | | 1962 | 4,281,744 | | 1961 | 4,236,386 | | 1960 | 4,195,467 |
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