| Year | Value | | 2022 | 14,555,379 | | 2021 | 14,460,310 | | 2020 | 14,375,837 | | 2019 | 14,320,095 | | 2018 | 14,308,439 | | 2017 | 14,314,025 | | 2016 | 14,311,803 | | 2015 | 14,281,545 | | 2014 | 14,196,380 | | 2013 | 14,041,358 | | 2012 | 13,832,728 | | 2011 | 13,579,294 | | 2010 | 13,302,142 | | 2009 | 13,054,191 | | 2008 | 12,855,603 | | 2007 | 12,700,023 | | 2006 | 12,583,676 | | 2005 | 12,482,528 | | 2004 | 12,364,597 | | 2003 | 12,226,247 | | 2002 | 12,069,962 | | 2001 | 11,895,439 | | 2000 | 11,713,754 | | 1999 | 11,545,910 | | 1998 | 11,390,381 | | 1997 | 11,252,594 | | 1996 | 11,125,388 | | 1995 | 10,983,631 | | 1994 | 10,831,750 | | 1993 | 10,664,301 | | 1992 | 10,471,394 | | 1991 | 10,233,743 | | 1990 | 9,951,033 | | 1989 | 9,650,178 | | 1988 | 9,343,038 | | 1987 | 9,026,668 | | 1986 | 8,697,987 | | 1985 | 8,357,814 | | 1984 | 8,012,879 | | 1983 | 7,661,518 | | 1982 | 7,304,234 | | 1981 | 6,963,543 | | 1980 | 6,661,301 | | 1979 | 6,407,221 | | 1978 | 6,193,628 | | 1977 | 6,004,624 | | 1976 | 5,827,670 | | 1975 | 5,659,000 | | 1974 | 5,499,441 | | 1973 | 5,351,691 | | 1972 | 5,216,779 | | 1971 | 5,100,967 | | 1970 | 4,991,284 | | 1969 | 4,876,357 | | 1968 | 4,760,886 | | 1967 | 4,642,099 | | 1966 | 4,522,339 | | 1965 | 4,401,977 | | 1964 | 4,278,625 | | 1963 | 4,151,545 | | 1962 | 4,022,089 | | 1961 | 3,891,264 | | 1960 | 3,759,284 |
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