| Year | Value | | 2022 | 8,516,657 | | 2021 | 8,609,654 | | 2020 | 8,673,170 | | 2019 | 8,701,817 | | 2018 | 8,695,131 | | 2017 | 8,671,798 | | 2016 | 8,652,886 | | 2015 | 8,651,453 | | 2014 | 8,671,655 | | 2013 | 8,711,292 | | 2012 | 8,770,225 | | 2011 | 8,836,260 | | 2010 | 8,896,078 | | 2009 | 8,951,505 | | 2008 | 8,995,670 | | 2007 | 9,017,096 | | 2006 | 9,008,713 | | 2005 | 8,965,999 | | 2004 | 8,881,541 | | 2003 | 8,760,428 | | 2002 | 8,610,437 | | 2001 | 8,439,782 | | 2000 | 8,258,878 | | 1999 | 8,077,177 | | 1998 | 7,906,933 | | 1997 | 7,751,528 | | 1996 | 7,607,833 | | 1995 | 7,478,813 | | 1994 | 7,362,523 | | 1993 | 7,251,190 | | 1992 | 7,151,824 | | 1991 | 7,075,604 | | 1990 | 7,016,248 | | 1989 | 6,969,645 | | 1988 | 6,930,834 | | 1987 | 6,881,740 | | 1986 | 6,808,588 | | 1985 | 6,707,637 | | 1984 | 6,579,146 | | 1983 | 6,427,725 | | 1982 | 6,261,997 | | 1981 | 6,088,264 | | 1980 | 5,909,650 | | 1979 | 5,730,008 | | 1978 | 5,551,575 | | 1977 | 5,376,518 | | 1976 | 5,208,464 | | 1975 | 5,046,818 | | 1974 | 4,891,733 | | 1973 | 4,728,083 | | 1972 | 4,543,647 | | 1971 | 4,346,635 | | 1970 | 4,153,744 | | 1969 | 3,975,039 | | 1968 | 3,823,896 | | 1967 | 3,711,855 | | 1966 | 3,629,449 | | 1965 | 3,555,268 | | 1964 | 3,476,301 | | 1963 | 3,394,992 | | 1962 | 3,307,209 | | 1961 | 3,213,399 | | 1960 | 3,114,180 |
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