Year | Value | 2022 | 541,604 | 2021 | 524,283 | 2020 | 518,815 | 2019 | 512,990 | 2018 | 505,970 | 2017 | 497,888 | 2016 | 489,224 | 2015 | 481,816 | 2014 | 477,895 | 2013 | 478,778 | 2012 | 484,751 | 2011 | 493,959 | 2010 | 503,175 | 2009 | 509,778 | 2008 | 508,227 | 2007 | 500,369 | 2006 | 489,543 | 2005 | 474,575 | 2004 | 458,071 | 2003 | 441,575 | 2002 | 427,344 | 2001 | 417,076 | 2000 | 409,678 | 1999 | 402,375 | 1998 | 397,138 | 1997 | 391,408 | 1996 | 374,278 | 1995 | 348,043 | 1994 | 320,077 | 1993 | 291,846 | 1992 | 272,043 | 1991 | 272,429 | 1990 | 293,857 | 1989 | 333,026 | 1988 | 384,139 | 1987 | 416,955 | 1986 | 441,521 | 1985 | 454,229 | 1984 | 448,118 | 1983 | 422,281 | 1982 | 386,375 | 1981 | 351,964 | 1980 | 330,692 | 1979 | 326,619 | 1978 | 337,698 | 1977 | 356,993 | 1976 | 371,278 | 1975 | 370,680 | 1974 | 354,154 | 1973 | 325,627 | 1972 | 289,460 | 1971 | 253,607 | 1970 | 223,149 | 1969 | 199,188 | 1968 | 182,195 | 1967 | 172,930 | 1966 | 167,683 | 1965 | 165,010 | 1964 | 165,981 | 1963 | 170,943 | 1962 | 178,124 | 1961 | 184,492 | 1960 | 188,293 |
|