Year | Value | 2022 | 321,857,883 | 2021 | 325,635,497 | 2020 | 329,041,541 | 2019 | 331,470,499 | 2018 | 333,040,821 | 2017 | 333,652,794 | 2016 | 333,129,283 | 2015 | 331,995,361 | 2014 | 330,540,435 | 2013 | 328,530,896 | 2012 | 325,761,861 | 2011 | 322,546,355 | 2010 | 319,437,152 | 2009 | 316,227,513 | 2008 | 312,965,437 | 2007 | 310,045,430 | 2006 | 307,837,507 | 2005 | 306,204,742 | 2004 | 304,540,043 | 2003 | 302,723,063 | 2002 | 301,158,254 | 2001 | 299,947,742 | 2000 | 299,176,185 | 1999 | 299,033,167 | 1998 | 299,545,216 | 1997 | 300,408,504 | 1996 | 301,663,639 | 1995 | 304,145,864 | 1994 | 307,289,842 | 1993 | 309,628,027 | 1992 | 311,432,864 | 1991 | 312,482,481 | 1990 | 311,084,224 | 1989 | 307,491,986 | 1988 | 303,527,446 | 1987 | 299,432,038 | 1986 | 295,179,914 | 1985 | 290,812,996 | 1984 | 286,458,877 | 1983 | 281,813,287 | 1982 | 276,316,139 | 1981 | 271,086,725 | 1980 | 267,412,793 | 1979 | 265,169,138 | 1978 | 264,588,779 | 1977 | 265,181,217 | 1976 | 265,963,329 | 1975 | 266,720,511 | 1974 | 266,803,663 | 1973 | 265,802,555 | 1972 | 263,418,621 | 1971 | 260,033,353 | 1970 | 256,606,577 | 1969 | 253,552,731 | 1968 | 251,388,833 | 1967 | 249,320,692 | 1966 | 244,268,218 | 1965 | 236,556,144 | 1964 | 228,732,679 | 1963 | 220,687,072 | 1962 | 214,447,857 | 1961 | 212,707,057 | 1960 | 214,068,767 |
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