| Year | Value | | 2022 | 4,160,244 | | 2021 | 4,125,414 | | 2020 | 4,097,783 | | 2019 | 4,060,108 | | 2018 | 4,003,393 | | 2017 | 3,939,665 | | 2016 | 3,880,011 | | 2015 | 3,816,253 | | 2014 | 3,744,559 | | 2013 | 3,664,454 | | 2012 | 3,576,301 | | 2011 | 3,484,773 | | 2010 | 3,398,741 | | 2009 | 3,319,132 | | 2008 | 3,239,034 | | 2007 | 3,157,851 | | 2006 | 3,077,225 | | 2005 | 2,994,894 | | 2004 | 2,910,574 | | 2003 | 2,826,013 | | 2002 | 2,739,619 | | 2001 | 2,650,513 | | 2000 | 2,558,888 | | 1999 | 2,463,280 | | 1998 | 2,368,804 | | 1997 | 2,281,090 | | 1996 | 2,199,284 | | 1995 | 2,122,163 | | 1994 | 2,044,825 | | 1993 | 1,965,987 | | 1992 | 1,888,505 | | 1991 | 1,811,794 | | 1990 | 1,736,006 | | 1989 | 1,667,541 | | 1988 | 1,609,497 | | 1987 | 1,559,428 | | 1986 | 1,517,805 | | 1985 | 1,484,531 | | 1984 | 1,458,348 | | 1983 | 1,436,036 | | 1982 | 1,414,735 | | 1981 | 1,391,948 | | 1980 | 1,361,430 | | 1979 | 1,318,426 | | 1978 | 1,268,861 | | 1977 | 1,219,995 | | 1976 | 1,168,740 | | 1975 | 1,118,027 | | 1974 | 1,074,992 | | 1973 | 1,038,333 | | 1972 | 1,006,161 | | 1971 | 976,520 | | 1970 | 954,754 | | 1969 | 940,218 | | 1968 | 924,110 | | 1967 | 904,197 | | 1966 | 880,451 | | 1965 | 853,218 | | 1964 | 822,854 | | 1963 | 791,053 | | 1962 | 760,126 | | 1961 | 732,588 | | 1960 | 710,633 |
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