| Year | Value | | 2022 | 8,800,406 | | 2021 | 8,579,664 | | 2020 | 8,359,194 | | 2019 | 8,140,163 | | 2018 | 7,925,155 | | 2017 | 7,714,564 | | 2016 | 7,508,739 | | 2015 | 7,307,890 | | 2014 | 7,111,154 | | 2013 | 6,918,883 | | 2012 | 6,731,566 | | 2011 | 6,548,585 | | 2010 | 6,370,907 | | 2009 | 6,198,778 | | 2008 | 6,033,364 | | 2007 | 5,874,678 | | 2006 | 5,720,487 | | 2005 | 5,572,083 | | 2004 | 5,430,752 | | 2003 | 5,294,846 | | 2002 | 5,164,280 | | 2001 | 5,038,914 | | 2000 | 4,917,618 | | 1999 | 4,799,863 | | 1998 | 4,685,724 | | 1997 | 4,574,529 | | 1996 | 4,464,551 | | 1995 | 4,354,128 | | 1994 | 4,242,265 | | 1993 | 4,128,846 | | 1992 | 4,014,941 | | 1991 | 3,901,938 | | 1990 | 3,789,744 | | 1989 | 3,679,525 | | 1988 | 3,572,361 | | 1987 | 3,467,595 | | 1986 | 3,365,337 | | 1985 | 3,267,020 | | 1984 | 3,173,550 | | 1983 | 3,084,136 | | 1982 | 2,997,903 | | 1981 | 2,915,008 | | 1980 | 2,835,865 | | 1979 | 2,760,785 | | 1978 | 2,689,521 | | 1977 | 2,621,448 | | 1976 | 2,553,806 | | 1975 | 2,485,378 | | 1974 | 2,417,188 | | 1973 | 2,349,185 | | 1972 | 2,282,488 | | 1971 | 2,218,015 | | 1970 | 2,155,773 | | 1969 | 2,095,813 | | 1968 | 2,037,862 | | 1967 | 1,981,610 | | 1966 | 1,927,177 | | 1965 | 1,874,916 | | 1964 | 1,824,777 | | 1963 | 1,776,386 | | 1962 | 1,729,534 | | 1961 | 1,683,914 | | 1960 | 1,639,489 |
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