| Year | Value | | 2022 | 6,788,768 | | 2021 | 6,595,513 | | 2020 | 6,393,357 | | 2019 | 6,159,931 | | 2018 | 5,916,094 | | 2017 | 5,702,229 | | 2016 | 5,517,373 | | 2015 | 5,354,538 | | 2014 | 5,217,366 | | 2013 | 5,085,629 | | 2012 | 4,936,358 | | 2011 | 4,782,630 | | 2010 | 4,635,435 | | 2009 | 4,500,002 | | 2008 | 4,378,753 | | 2007 | 4,274,118 | | 2006 | 4,180,542 | | 2005 | 4,084,485 | | 2004 | 3,987,771 | | 2003 | 3,893,875 | | 2002 | 3,797,280 | | 2001 | 3,705,131 | | 2000 | 3,623,661 | | 1999 | 3,544,137 | | 1998 | 3,466,697 | | 1997 | 3,394,183 | | 1996 | 3,323,159 | | 1995 | 3,252,200 | | 1994 | 3,176,975 | | 1993 | 3,098,454 | | 1992 | 3,020,315 | | 1991 | 2,951,139 | | 1990 | 2,893,640 | | 1989 | 2,834,971 | | 1988 | 2,775,410 | | 1987 | 2,716,735 | | 1986 | 2,653,557 | | 1985 | 2,589,474 | | 1984 | 2,523,732 | | 1983 | 2,461,115 | | 1982 | 2,402,737 | | 1981 | 2,349,463 | | 1980 | 2,299,871 | | 1979 | 2,243,391 | | 1978 | 2,183,111 | | 1977 | 2,125,342 | | 1976 | 2,070,677 | | 1975 | 2,016,904 | | 1974 | 1,963,984 | | 1973 | 1,912,408 | | 1972 | 1,863,517 | | 1971 | 1,817,760 | | 1970 | 1,775,007 | | 1969 | 1,735,801 | | 1968 | 1,700,249 | | 1967 | 1,667,797 | | 1966 | 1,636,436 | | 1965 | 1,604,486 | | 1964 | 1,571,717 | | 1963 | 1,537,672 | | 1962 | 1,502,369 | | 1961 | 1,466,287 | | 1960 | 1,429,850 |
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