Year | Value | 2022 | 248,435 | 2021 | 255,490 | 2020 | 251,276 | 2019 | 248,472 | 2018 | 248,292 | 2017 | 248,155 | 2016 | 244,564 | 2015 | 239,575 | 2014 | 235,066 | 2013 | 231,307 | 2012 | 233,087 | 2011 | 241,600 | 2010 | 250,721 | 2009 | 255,896 | 2008 | 258,529 | 2007 | 262,152 | 2006 | 266,047 | 2005 | 269,759 | 2004 | 273,826 | 2003 | 278,366 | 2002 | 282,050 | 2001 | 287,425 | 2000 | 292,617 | 1999 | 297,126 | 1998 | 302,859 | 1997 | 307,641 | 1996 | 312,632 | 1995 | 314,254 | 1994 | 308,249 | 1993 | 297,350 | 1992 | 287,188 | 1991 | 277,695 | 1990 | 269,478 | 1989 | 267,387 | 1988 | 267,316 | 1987 | 267,036 | 1986 | 270,026 | 1985 | 276,726 | 1984 | 286,271 | 1983 | 296,013 | 1982 | 303,598 | 1981 | 307,872 | 1980 | 309,031 | 1979 | 307,658 | 1978 | 306,683 | 1977 | 307,361 | 1976 | 308,876 | 1975 | 312,264 | 1974 | 316,516 | 1973 | 318,892 | 1972 | 317,976 | 1971 | 314,091 | 1970 | 306,619 | 1969 | 292,281 | 1968 | 271,602 | 1967 | 249,128 | 1966 | 227,916 | 1965 | 210,975 | 1964 | 203,119 | 1963 | 205,149 | 1962 | 211,744 | 1961 | 219,391 | 1960 | 227,303 |
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