| Year | Value | | 2022 | 11,102,356 | | 2021 | 10,827,801 | | 2020 | 10,574,372 | | 2019 | 10,351,905 | | 2018 | 10,158,535 | | 2017 | 10,002,918 | | 2016 | 9,901,703 | | 2015 | 9,819,854 | | 2014 | 9,757,076 | | 2013 | 9,707,202 | | 2012 | 9,611,947 | | 2011 | 9,435,968 | | 2010 | 9,183,601 | | 2009 | 8,896,621 | | 2008 | 8,619,210 | | 2007 | 8,356,011 | | 2006 | 8,094,600 | | 2005 | 7,833,108 | | 2004 | 7,561,329 | | 2003 | 7,282,734 | | 2002 | 7,028,015 | | 2001 | 6,749,747 | | 2000 | 6,415,240 | | 1999 | 6,119,971 | | 1998 | 5,886,442 | | 1997 | 5,671,676 | | 1996 | 5,470,222 | | 1995 | 5,272,901 | | 1994 | 5,109,617 | | 1993 | 4,977,813 | | 1992 | 4,918,128 | | 1991 | 4,876,056 | | 1990 | 4,779,163 | | 1989 | 4,687,991 | | 1988 | 4,594,117 | | 1987 | 4,485,742 | | 1986 | 4,372,709 | | 1985 | 4,256,703 | | 1984 | 4,159,892 | | 1983 | 4,064,319 | | 1982 | 3,913,413 | | 1981 | 3,705,653 | | 1980 | 3,463,854 | | 1979 | 3,246,521 | | 1978 | 3,077,573 | | 1977 | 2,928,150 | | 1976 | 2,783,234 | | 1975 | 2,643,869 | | 1974 | 2,525,699 | | 1973 | 2,439,638 | | 1972 | 2,379,877 | | 1971 | 2,340,912 | | 1970 | 2,318,106 | | 1969 | 2,299,172 | | 1968 | 2,271,602 | | 1967 | 2,234,575 | | 1966 | 2,191,959 | | 1965 | 2,146,482 | | 1964 | 2,096,329 | | 1963 | 2,043,979 | | 1962 | 1,994,725 | | 1961 | 1,950,114 | | 1960 | 1,902,483 |
|