| Year | Value | | 2022 | 3,116,902 | | 2021 | 3,197,294 | | 2020 | 3,275,428 | | 2019 | 3,336,210 | | 2018 | 3,348,300 | | 2017 | 3,321,451 | | 2016 | 3,274,507 | | 2015 | 3,221,428 | | 2014 | 3,175,854 | | 2013 | 3,145,726 | | 2012 | 3,130,135 | | 2011 | 3,124,224 | | 2010 | 3,114,929 | | 2009 | 3,097,102 | | 2008 | 3,074,185 | | 2007 | 3,058,766 | | 2006 | 3,087,217 | | 2005 | 3,118,299 | | 2004 | 3,155,529 | | 2003 | 3,211,972 | | 2002 | 3,271,732 | | 2001 | 3,305,160 | | 2000 | 3,319,004 | | 1999 | 3,327,224 | | 1998 | 3,319,020 | | 1997 | 3,295,446 | | 1996 | 3,266,921 | | 1995 | 3,244,662 | | 1994 | 3,232,740 | | 1993 | 3,229,567 | | 1992 | 3,235,089 | | 1991 | 3,242,786 | | 1990 | 3,248,748 | | 1989 | 3,251,052 | | 1988 | 3,247,642 | | 1987 | 3,243,440 | | 1986 | 3,239,563 | | 1985 | 3,234,699 | | 1984 | 3,228,781 | | 1983 | 3,219,928 | | 1982 | 3,201,813 | | 1981 | 3,182,420 | | 1980 | 3,155,618 | | 1979 | 3,124,290 | | 1978 | 3,094,244 | | 1977 | 3,052,517 | | 1976 | 2,994,921 | | 1975 | 2,952,457 | | 1974 | 2,923,136 | | 1973 | 2,928,175 | | 1972 | 2,933,392 | | 1971 | 2,907,581 | | 1970 | 2,910,592 | | 1969 | 2,918,359 | | 1968 | 2,840,248 | | 1967 | 2,709,942 | | 1966 | 2,599,656 | | 1965 | 2,536,111 | | 1964 | 2,509,861 | | 1963 | 2,457,021 | | 1962 | 2,404,243 | | 1961 | 2,356,813 | | 1960 | 2,321,708 |
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