| Year | Value | | 2022 | 1,372,113 | | 2021 | 1,378,715 | | 2020 | 1,386,927 | | 2019 | 1,398,053 | | 2018 | 1,411,207 | | 2017 | 1,423,732 | | 2016 | 1,432,770 | | 2015 | 1,438,212 | | 2014 | 1,439,503 | | 2013 | 1,436,051 | | 2012 | 1,428,219 | | 2011 | 1,415,003 | | 2010 | 1,395,799 | | 2009 | 1,364,166 | | 2008 | 1,321,016 | | 2007 | 1,274,246 | | 2006 | 1,224,961 | | 2005 | 1,174,105 | | 2004 | 1,122,929 | | 2003 | 1,075,256 | | 2002 | 1,034,973 | | 2001 | 1,003,115 | | 2000 | 979,965 | | 1999 | 960,380 | | 1998 | 940,927 | | 1997 | 921,458 | | 1996 | 901,816 | | 1995 | 883,445 | | 1994 | 865,086 | | 1993 | 846,792 | | 1992 | 830,809 | | 1991 | 818,367 | | 1990 | 808,010 | | 1989 | 798,703 | | 1988 | 790,486 | | 1987 | 782,662 | | 1986 | 773,929 | | 1985 | 763,271 | | 1984 | 751,000 | | 1983 | 737,154 | | 1982 | 721,781 | | 1981 | 704,578 | | 1980 | 684,508 | | 1979 | 662,070 | | 1978 | 638,075 | | 1977 | 612,672 | | 1976 | 587,988 | | 1975 | 565,003 | | 1974 | 540,343 | | 1973 | 513,907 | | 1972 | 488,087 | | 1971 | 461,745 | | 1970 | 434,064 | | 1969 | 409,299 | | 1968 | 389,274 | | 1967 | 372,295 | | 1966 | 359,417 | | 1965 | 350,897 | | 1964 | 345,701 | | 1963 | 343,510 | | 1962 | 342,667 | | 1961 | 340,528 | | 1960 | 335,382 |
|