| Year | Value | | 2022 | 8,518,842 | | 2021 | 8,292,146 | | 2020 | 8,063,111 | | 2019 | 7,793,925 | | 2018 | 7,506,478 | | 2017 | 7,245,554 | | 2016 | 7,009,265 | | 2015 | 6,786,195 | | 2014 | 6,588,790 | | 2013 | 6,405,459 | | 2012 | 6,209,506 | | 2011 | 6,010,705 | | 2010 | 5,821,518 | | 2009 | 5,647,755 | | 2008 | 5,493,044 | | 2007 | 5,351,086 | | 2006 | 5,215,152 | | 2005 | 5,083,782 | | 2004 | 4,958,714 | | 2003 | 4,842,160 | | 2002 | 4,733,653 | | 2001 | 4,635,062 | | 2000 | 4,547,331 | | 1999 | 4,466,062 | | 1998 | 4,388,738 | | 1997 | 4,313,182 | | 1996 | 4,227,013 | | 1995 | 4,130,316 | | 1994 | 4,038,779 | | 1993 | 3,942,897 | | 1992 | 3,835,042 | | 1991 | 3,731,578 | | 1990 | 3,633,547 | | 1989 | 3,536,139 | | 1988 | 3,444,583 | | 1987 | 3,355,748 | | 1986 | 3,267,374 | | 1985 | 3,176,708 | | 1984 | 3,087,533 | | 1983 | 3,011,829 | | 1982 | 2,939,038 | | 1981 | 2,862,293 | | 1980 | 2,791,732 | | 1979 | 2,721,150 | | 1978 | 2,644,887 | | 1977 | 2,573,802 | | 1976 | 2,506,925 | | 1975 | 2,440,379 | | 1974 | 2,375,888 | | 1973 | 2,313,222 | | 1972 | 2,253,497 | | 1971 | 2,196,968 | | 1970 | 2,142,664 | | 1969 | 2,090,976 | | 1968 | 2,042,530 | | 1967 | 1,997,339 | | 1966 | 1,954,546 | | 1965 | 1,912,477 | | 1964 | 1,870,295 | | 1963 | 1,827,900 | | 1962 | 1,785,498 | | 1961 | 1,743,459 | | 1960 | 1,702,690 |
|