| Year | Value | | 2022 | 7,506,512 | | 2021 | 7,499,688 | | 2020 | 7,490,624 | | 2019 | 7,479,378 | | 2018 | 7,478,780 | | 2017 | 7,488,953 | | 2016 | 7,495,735 | | 2015 | 7,519,861 | | 2014 | 7,584,579 | | 2013 | 7,684,006 | | 2012 | 7,824,597 | | 2011 | 7,995,783 | | 2010 | 8,172,869 | | 2009 | 8,349,668 | | 2008 | 8,519,835 | | 2007 | 8,661,674 | | 2006 | 8,770,654 | | 2005 | 8,843,060 | | 2004 | 8,860,225 | | 2003 | 8,831,873 | | 2002 | 8,778,308 | | 2001 | 8,689,617 | | 2000 | 8,576,296 | | 1999 | 8,476,464 | | 1998 | 8,384,134 | | 1997 | 8,295,383 | | 1996 | 8,250,749 | | 1995 | 8,259,760 | | 1994 | 8,289,772 | | 1993 | 8,334,490 | | 1992 | 8,398,163 | | 1991 | 8,471,962 | | 1990 | 8,522,101 | | 1989 | 8,532,944 | | 1988 | 8,529,743 | | 1987 | 8,516,352 | | 1986 | 8,480,176 | | 1985 | 8,411,517 | | 1984 | 8,312,773 | | 1983 | 8,188,499 | | 1982 | 8,035,487 | | 1981 | 7,865,270 | | 1980 | 7,693,485 | | 1979 | 7,523,648 | | 1978 | 7,361,056 | | 1977 | 7,205,611 | | 1976 | 7,037,594 | | 1975 | 6,853,978 | | 1974 | 6,677,566 | | 1973 | 6,508,425 | | 1972 | 6,336,570 | | 1971 | 6,270,544 | | 1970 | 6,236,230 | | 1969 | 6,097,503 | | 1968 | 5,933,439 | | 1967 | 5,775,121 | | 1966 | 5,621,773 | | 1965 | 5,470,543 | | 1964 | 5,307,858 | | 1963 | 5,130,868 | | 1962 | 4,945,344 | | 1961 | 4,757,027 | | 1960 | 4,578,296 |
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