| Year | Value | | 2022 | 3,990,740 | | 2021 | 3,963,919 | | 2020 | 3,920,484 | | 2019 | 3,867,374 | | 2018 | 3,808,643 | | 2017 | 3,744,021 | | 2016 | 3,678,229 | | 2015 | 3,618,417 | | 2014 | 3,562,242 | | 2013 | 3,512,378 | | 2012 | 3,462,395 | | 2011 | 3,395,749 | | 2010 | 3,312,905 | | 2009 | 3,220,811 | | 2008 | 3,119,013 | | 2007 | 3,013,104 | | 2006 | 2,925,349 | | 2005 | 2,870,666 | | 2004 | 2,846,255 | | 2003 | 2,842,805 | | 2002 | 2,852,639 | | 2001 | 2,828,270 | | 2000 | 2,791,177 | | 1999 | 2,772,290 | | 1998 | 2,735,488 | | 1997 | 2,689,540 | | 1996 | 2,655,933 | | 1995 | 2,592,425 | | 1994 | 2,497,852 | | 1993 | 2,392,497 | | 1992 | 2,276,247 | | 1991 | 2,160,794 | | 1990 | 2,059,038 | | 1989 | 1,970,539 | | 1988 | 1,859,870 | | 1987 | 1,721,438 | | 1986 | 1,597,605 | | 1985 | 1,484,041 | | 1984 | 1,350,111 | | 1983 | 1,252,300 | | 1982 | 1,200,561 | | 1981 | 1,162,943 | | 1980 | 1,134,796 | | 1979 | 1,118,633 | | 1978 | 1,108,701 | | 1977 | 1,100,551 | | 1976 | 1,100,556 | | 1975 | 1,109,235 | | 1974 | 1,125,483 | | 1973 | 1,149,206 | | 1972 | 1,173,511 | | 1971 | 1,186,126 | | 1970 | 1,183,532 | | 1969 | 1,168,637 | | 1968 | 1,138,937 | | 1967 | 1,099,210 | | 1966 | 1,062,957 | | 1965 | 1,037,494 | | 1964 | 1,020,655 | | 1963 | 1,011,695 | | 1962 | 1,008,380 | | 1961 | 1,001,298 | | 1960 | 985,551 |
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