Year | Value | 2022 | 328,680 | 2021 | 334,435 | 2020 | 339,726 | 2019 | 344,172 | 2018 | 346,968 | 2017 | 347,249 | 2016 | 344,360 | 2015 | 338,029 | 2014 | 328,512 | 2013 | 316,576 | 2012 | 303,357 | 2011 | 290,144 | 2010 | 277,943 | 2009 | 267,203 | 2008 | 258,305 | 2007 | 251,315 | 2006 | 246,462 | 2005 | 244,115 | 2004 | 244,119 | 2003 | 246,143 | 2002 | 249,925 | 2001 | 254,825 | 2000 | 260,363 | 1999 | 266,627 | 1998 | 273,573 | 1997 | 280,492 | 1996 | 286,473 | 1995 | 290,869 | 1994 | 294,188 | 1993 | 296,182 | 1992 | 296,720 | 1991 | 296,682 | 1990 | 295,008 | 1989 | 289,921 | 1988 | 281,573 | 1987 | 271,054 | 1986 | 259,303 | 1985 | 248,047 | 1984 | 238,288 | 1983 | 230,017 | 1982 | 223,127 | 1981 | 217,494 | 1980 | 212,650 | 1979 | 208,023 | 1978 | 203,427 | 1977 | 198,914 | 1976 | 194,624 | 1975 | 190,720 | 1974 | 187,154 | 1973 | 184,057 | 1972 | 181,619 | 1971 | 179,784 | 1970 | 178,533 | 1969 | 177,857 | 1968 | 177,429 | 1967 | 176,818 | 1966 | 175,564 | 1965 | 173,262 | 1964 | 169,658 | 1963 | 164,682 | 1962 | 158,443 | 1961 | 151,224 | 1960 | 143,410 |
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