| Year | Value | | 2022 | 4,033,045 | | 2021 | 3,929,259 | | 2020 | 3,818,723 | | 2019 | 3,695,873 | | 2018 | 3,570,203 | | 2017 | 3,445,787 | | 2016 | 3,335,139 | | 2015 | 3,245,392 | | 2014 | 3,169,057 | | 2013 | 3,097,834 | | 2012 | 3,029,421 | | 2011 | 2,962,634 | | 2010 | 2,899,436 | | 2009 | 2,840,820 | | 2008 | 2,786,941 | | 2007 | 2,724,346 | | 2006 | 2,646,608 | | 2005 | 2,552,793 | | 2004 | 2,434,508 | | 2003 | 2,308,412 | | 2002 | 2,203,295 | | 2001 | 2,122,381 | | 2000 | 2,063,749 | | 1999 | 2,031,860 | | 1998 | 2,013,225 | | 1997 | 1,984,910 | | 1996 | 1,944,912 | | 1995 | 1,903,306 | | 1994 | 1,860,414 | | 1993 | 1,819,818 | | 1992 | 1,783,297 | | 1991 | 1,744,540 | | 1990 | 1,700,666 | | 1989 | 1,655,508 | | 1988 | 1,611,500 | | 1987 | 1,568,069 | | 1986 | 1,526,124 | | 1985 | 1,485,773 | | 1984 | 1,445,894 | | 1983 | 1,405,253 | | 1982 | 1,365,488 | | 1981 | 1,330,750 | | 1980 | 1,303,305 | | 1979 | 1,281,911 | | 1978 | 1,264,073 | | 1977 | 1,247,415 | | 1976 | 1,232,071 | | 1975 | 1,216,169 | | 1974 | 1,195,243 | | 1973 | 1,170,830 | | 1972 | 1,146,348 | | 1971 | 1,146,603 | | 1970 | 1,148,318 | | 1969 | 1,125,920 | | 1968 | 1,101,654 | | 1967 | 1,076,767 | | 1966 | 1,052,278 | | 1965 | 1,028,386 | | 1964 | 1,004,923 | | 1963 | 982,238 | | 1962 | 960,280 | | 1961 | 938,490 | | 1960 | 916,674 |
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