| Year | Value | | 2022 | 3,609,132 | | 2021 | 3,610,960 | | 2020 | 3,592,890 | | 2019 | 3,560,243 | | 2018 | 3,528,079 | | 2017 | 3,512,191 | | 2016 | 3,525,365 | | 2015 | 3,580,980 | | 2014 | 3,684,457 | | 2013 | 3,824,753 | | 2012 | 3,973,267 | | 2011 | 4,106,599 | | 2010 | 4,202,547 | | 2009 | 4,247,922 | | 2008 | 4,264,831 | | 2007 | 4,272,157 | | 2006 | 4,273,859 | | 2005 | 4,280,693 | | 2004 | 4,296,446 | | 2003 | 4,319,120 | | 2002 | 4,342,683 | | 2001 | 4,358,501 | | 2000 | 4,357,328 | | 1999 | 4,311,406 | | 1998 | 4,223,890 | | 1997 | 4,125,107 | | 1996 | 4,023,908 | | 1995 | 3,928,244 | | 1994 | 3,838,283 | | 1993 | 3,755,410 | | 1992 | 3,671,242 | | 1991 | 3,569,804 | | 1990 | 3,451,933 | | 1989 | 3,325,320 | | 1988 | 3,196,274 | | 1987 | 3,072,736 | | 1986 | 2,971,807 | | 1985 | 2,907,233 | | 1984 | 2,876,149 | | 1983 | 2,870,911 | | 1982 | 2,884,205 | | 1981 | 2,866,307 | | 1980 | 2,838,617 | | 1979 | 2,876,634 | | 1978 | 2,887,563 | | 1977 | 2,832,322 | | 1976 | 2,788,139 | | 1975 | 2,714,457 | | 1974 | 2,613,653 | | 1973 | 2,506,317 | | 1972 | 2,389,912 | | 1971 | 2,272,567 | | 1970 | 2,167,428 | | 1969 | 2,078,163 | | 1968 | 1,962,825 | | 1967 | 1,811,069 | | 1966 | 1,671,212 | | 1965 | 1,543,001 | | 1964 | 1,393,697 | | 1963 | 1,286,992 | | 1962 | 1,235,262 | | 1961 | 1,199,613 | | 1960 | 1,172,714 |
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