| Year | Value | | 2022 | 8,783,300 | | 2021 | 8,503,496 | | 2020 | 8,318,970 | | 2019 | 8,165,823 | | 2018 | 8,111,800 | | 2017 | 8,079,319 | | 2016 | 8,047,988 | | 2015 | 8,006,683 | | 2014 | 7,972,176 | | 2013 | 7,931,289 | | 2012 | 7,897,110 | | 2011 | 7,846,012 | | 2010 | 7,763,687 | | 2009 | 7,612,140 | | 2008 | 7,466,927 | | 2007 | 7,344,414 | | 2006 | 7,177,522 | | 2005 | 7,037,997 | | 2004 | 6,933,887 | | 2003 | 6,751,848 | | 2002 | 6,588,998 | | 2001 | 6,486,446 | | 2000 | 6,355,557 | | 1999 | 6,220,391 | | 1998 | 6,128,035 | | 1997 | 6,062,175 | | 1996 | 5,970,915 | | 1995 | 5,866,961 | | 1994 | 5,749,173 | | 1993 | 5,616,732 | | 1992 | 5,456,083 | | 1991 | 5,266,254 | | 1990 | 5,086,855 | | 1989 | 4,933,773 | | 1988 | 4,797,019 | | 1987 | 4,655,542 | | 1986 | 4,527,462 | | 1985 | 4,398,028 | | 1984 | 4,265,493 | | 1983 | 4,158,488 | | 1982 | 4,019,258 | | 1981 | 3,880,606 | | 1980 | 3,767,249 | | 1979 | 3,648,703 | | 1978 | 3,514,653 | | 1977 | 3,368,008 | | 1976 | 3,235,088 | | 1975 | 3,095,888 | | 1974 | 2,959,122 | | 1973 | 2,858,018 | | 1972 | 2,773,384 | | 1971 | 2,677,326 | | 1970 | 2,564,623 | | 1969 | 2,454,600 | | 1968 | 2,350,202 | | 1967 | 2,255,137 | | 1966 | 2,168,752 | | 1965 | 2,082,768 | | 1964 | 1,994,945 | | 1963 | 1,914,988 | | 1962 | 1,844,547 | | 1961 | 1,773,957 | | 1960 | 1,700,840 |
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