| Year | Value | | 2022 | 13,205,029 | | 2021 | 12,713,103 | | 2020 | 12,238,236 | | 2019 | 11,758,398 | | 2018 | 11,282,260 | | 2017 | 10,817,186 | | 2016 | 10,361,240 | | 2015 | 9,917,199 | | 2014 | 9,481,916 | | 2013 | 9,055,561 | | 2012 | 8,642,705 | | 2011 | 8,244,926 | | 2010 | 7,862,636 | | 2009 | 7,495,790 | | 2008 | 7,143,108 | | 2007 | 6,804,009 | | 2006 | 6,477,861 | | 2005 | 6,169,349 | | 2004 | 5,886,214 | | 2003 | 5,622,379 | | 2002 | 5,370,307 | | 2001 | 5,127,958 | | 2000 | 4,893,201 | | 1999 | 4,664,859 | | 1998 | 4,444,997 | | 1997 | 4,233,201 | | 1996 | 4,028,808 | | 1995 | 3,826,153 | | 1994 | 3,612,224 | | 1993 | 3,392,694 | | 1992 | 3,183,801 | | 1991 | 2,986,079 | | 1990 | 2,799,547 | | 1989 | 2,624,031 | | 1988 | 2,458,743 | | 1987 | 2,302,444 | | 1986 | 2,156,421 | | 1985 | 2,027,813 | | 1984 | 1,911,880 | | 1983 | 1,803,726 | | 1982 | 1,703,069 | | 1981 | 1,609,371 | | 1980 | 1,521,944 | | 1979 | 1,440,274 | | 1978 | 1,364,664 | | 1977 | 1,294,135 | | 1976 | 1,228,090 | | 1975 | 1,166,094 | | 1974 | 1,108,209 | | 1973 | 1,053,986 | | 1972 | 1,003,073 | | 1971 | 955,150 | | 1970 | 910,200 | | 1969 | 855,271 | | 1968 | 804,519 | | 1967 | 757,221 | | 1966 | 713,218 | | 1965 | 672,288 | | 1964 | 634,059 | | 1963 | 598,678 | | 1962 | 565,615 | | 1961 | 534,118 | | 1960 | 504,364 |
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