Year | Value | 2022 | 35,487,430 | 2021 | 35,496,573 | 2020 | 35,764,240 | 2019 | 35,894,138 | 2018 | 36,083,089 | 2017 | 36,330,095 | 2016 | 36,688,137 | 2015 | 37,122,428 | 2014 | 37,514,642 | 2013 | 37,767,758 | 2012 | 37,872,858 | 2011 | 37,847,723 | 2010 | 37,854,820 | 2009 | 37,823,250 | 2008 | 37,749,433 | 2007 | 37,668,048 | 2006 | 37,684,381 | 2005 | 37,815,958 | 2004 | 38,018,496 | 2003 | 38,148,079 | 2002 | 38,130,849 | 2001 | 37,982,275 | 2000 | 37,783,583 | 1999 | 37,712,530 | 1998 | 37,818,374 | 1997 | 38,057,580 | 1996 | 38,469,255 | 1995 | 38,968,097 | 1994 | 39,374,966 | 1993 | 39,658,657 | 1992 | 39,867,469 | 1991 | 39,797,444 | 1990 | 39,660,737 | 1989 | 39,799,497 | 1988 | 39,999,569 | 1987 | 40,140,751 | 1986 | 40,360,810 | 1985 | 40,561,664 | 1984 | 40,478,486 | 1983 | 40,259,231 | 1982 | 40,002,502 | 1981 | 39,676,996 | 1980 | 39,299,633 | 1979 | 38,903,314 | 1978 | 38,439,008 | 1977 | 38,002,275 | 1976 | 37,767,044 | 1975 | 37,456,511 | 1974 | 36,979,940 | 1973 | 36,760,352 | 1972 | 36,765,275 | 1971 | 36,329,209 | 1970 | 35,186,208 | 1969 | 34,072,478 | 1968 | 32,952,600 | 1967 | 31,616,737 | 1966 | 30,462,241 | 1965 | 30,075,086 | 1964 | 29,942,785 | 1963 | 29,523,032 | 1962 | 29,093,369 | 1961 | 28,821,143 | 1960 | 28,557,939 |
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