Year | Value | 2022 | 333,922 | 2021 | 336,641 | 2020 | 341,718 | 2019 | 347,333 | 2018 | 348,792 | 2017 | 343,033 | 2016 | 331,883 | 2015 | 319,299 | 2014 | 307,672 | 2013 | 299,144 | 2012 | 295,159 | 2011 | 294,620 | 2010 | 295,203 | 2009 | 294,628 | 2008 | 293,911 | 2007 | 293,434 | 2006 | 291,949 | 2005 | 292,381 | 2004 | 296,744 | 2003 | 302,885 | 2002 | 309,967 | 2001 | 318,731 | 2000 | 327,082 | 1999 | 332,859 | 1998 | 334,236 | 1997 | 329,541 | 1996 | 317,822 | 1995 | 300,684 | 1994 | 282,024 | 1993 | 264,586 | 1992 | 250,205 | 1991 | 240,223 | 1990 | 233,286 | 1989 | 225,726 | 1988 | 218,331 | 1987 | 213,923 | 1986 | 212,264 | 1985 | 212,518 | 1984 | 214,232 | 1983 | 217,461 | 1982 | 220,830 | 1981 | 223,710 | 1980 | 227,565 | 1979 | 232,515 | 1978 | 238,052 | 1977 | 243,821 | 1976 | 251,337 | 1975 | 261,294 | 1974 | 267,061 | 1973 | 267,043 | 1972 | 266,750 | 1971 | 264,301 | 1970 | 256,533 | 1969 | 252,130 | 1968 | 254,872 | 1967 | 258,437 | 1966 | 261,291 | 1965 | 263,708 | 1964 | 265,677 | 1963 | 266,107 | 1962 | 264,697 | 1961 | 262,224 | 1960 | 258,693 |
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