| Year | Value | | 2022 | 1,783,996 | | 2021 | 1,740,014 | | 2020 | 1,702,814 | | 2019 | 1,670,982 | | 2018 | 1,640,766 | | 2017 | 1,614,694 | | 2016 | 1,593,002 | | 2015 | 1,577,565 | | 2014 | 1,568,177 | | 2013 | 1,560,711 | | 2012 | 1,552,184 | | 2011 | 1,539,173 | | 2010 | 1,515,528 | | 2009 | 1,479,841 | | 2008 | 1,438,794 | | 2007 | 1,394,584 | | 2006 | 1,348,364 | | 2005 | 1,301,316 | | 2004 | 1,255,261 | | 2003 | 1,209,665 | | 2002 | 1,163,282 | | 2001 | 1,116,360 | | 2000 | 1,069,514 | | 1999 | 1,023,528 | | 1998 | 977,620 | | 1997 | 932,717 | | 1996 | 890,643 | | 1995 | 850,481 | | 1994 | 810,666 | | 1993 | 772,958 | | 1992 | 738,738 | | 1991 | 706,722 | | 1990 | 676,718 | | 1989 | 648,728 | | 1988 | 622,646 | | 1987 | 597,377 | | 1986 | 572,608 | | 1985 | 548,735 | | 1984 | 525,941 | | 1983 | 503,971 | | 1982 | 482,835 | | 1981 | 463,322 | | 1980 | 445,579 | | 1979 | 429,282 | | 1978 | 414,355 | | 1977 | 400,498 | | 1976 | 387,275 | | 1975 | 374,904 | | 1974 | 363,632 | | 1973 | 353,472 | | 1972 | 344,308 | | 1971 | 335,953 | | 1970 | 328,288 | | 1969 | 322,353 | | 1968 | 318,652 | | 1967 | 317,227 | | 1966 | 317,229 | | 1965 | 316,618 | | 1964 | 314,014 | | 1963 | 309,260 | | 1962 | 302,488 | | 1961 | 294,674 | | 1960 | 287,849 |
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