Year | Value | 2022 | 356,981 | 2021 | 352,078 | 2020 | 346,618 | 2019 | 338,821 | 2018 | 328,946 | 2017 | 318,557 | 2016 | 309,221 | 2015 | 299,722 | 2014 | 289,248 | 2013 | 279,210 | 2012 | 270,217 | 2011 | 260,853 | 2010 | 253,257 | 2009 | 249,933 | 2008 | 249,939 | 2007 | 252,426 | 2006 | 252,320 | 2005 | 244,434 | 2004 | 237,366 | 2003 | 234,428 | 2002 | 230,047 | 2001 | 232,824 | 2000 | 249,303 | 1999 | 265,485 | 1998 | 266,632 | 1997 | 257,551 | 1996 | 242,778 | 1995 | 221,711 | 1994 | 199,667 | 1993 | 188,343 | 1992 | 189,019 | 1991 | 192,761 | 1990 | 198,231 | 1989 | 204,203 | 1988 | 209,441 | 1987 | 213,721 | 1986 | 218,258 | 1985 | 224,790 | 1984 | 233,353 | 1983 | 243,404 | 1982 | 254,220 | 1981 | 263,700 | 1980 | 268,525 | 1979 | 264,514 | 1978 | 247,182 | 1977 | 221,532 | 1976 | 195,835 | 1975 | 176,069 | 1974 | 172,813 | 1973 | 188,020 | 1972 | 211,937 | 1971 | 235,634 | 1970 | 254,754 | 1969 | 265,038 | 1968 | 268,211 | 1967 | 269,381 | 1966 | 270,721 | 1965 | 271,111 | 1964 | 269,746 | 1963 | 268,962 | 1962 | 268,485 | 1961 | 267,541 | 1960 | 266,546 |
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