| Year | Value | | 2022 | 3,888,681 | | 2021 | 4,006,416 | | 2020 | 4,099,737 | | 2019 | 4,140,296 | | 2018 | 4,134,440 | | 2017 | 4,100,884 | | 2016 | 4,059,492 | | 2015 | 4,024,289 | | 2014 | 4,001,824 | | 2013 | 3,992,780 | | 2012 | 3,991,667 | | 2011 | 3,989,861 | | 2010 | 3,981,072 | | 2009 | 3,965,965 | | 2008 | 3,942,840 | | 2007 | 3,906,247 | | 2006 | 3,858,826 | | 2005 | 3,806,480 | | 2004 | 3,746,973 | | 2003 | 3,682,121 | | 2002 | 3,606,229 | | 2001 | 3,505,401 | | 2000 | 3,382,369 | | 1999 | 3,254,576 | | 1998 | 3,117,559 | | 1997 | 2,973,054 | | 1996 | 2,851,880 | | 1995 | 2,769,092 | | 1994 | 2,725,528 | | 1993 | 2,712,349 | | 1992 | 2,718,832 | | 1991 | 2,696,495 | | 1990 | 2,666,815 | | 1989 | 2,659,325 | | 1988 | 2,637,468 | | 1987 | 2,608,693 | | 1986 | 2,591,700 | | 1985 | 2,542,778 | | 1984 | 2,457,939 | | 1983 | 2,357,919 | | 1982 | 2,243,236 | | 1981 | 2,126,728 | | 1980 | 2,021,411 | | 1979 | 1,932,543 | | 1978 | 1,818,435 | | 1977 | 1,664,895 | | 1976 | 1,526,044 | | 1975 | 1,403,191 | | 1974 | 1,268,349 | | 1973 | 1,176,929 | | 1972 | 1,136,181 | | 1971 | 1,106,309 | | 1970 | 1,082,689 | | 1969 | 1,070,888 | | 1968 | 1,067,252 | | 1967 | 1,069,474 | | 1966 | 1,076,749 | | 1965 | 1,090,383 | | 1964 | 1,108,996 | | 1963 | 1,132,870 | | 1962 | 1,155,908 | | 1961 | 1,167,613 | | 1960 | 1,164,125 |
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