Year Number 1971 159320.53125 1972 167810.671875 1973 175701.21875 1974 179887.515625 1975 191152.609375 1976 202261.28125 1977 215683.5 1978 229674.875 1979 246928.09375 1980 263488.96875 1981 284435.5625 1982 294579.21875 1983 311054.46875 1984 328134.15625 1985 335552.59375 1986 341335.75 1987 361829.78125 1988 386893.65625 1989 394202.71875 1990 401068.59375 1991 418159.6875 1992 426808.90625 1993 440794.78125 1994 456855.96875 1995 474435.59375 1996 495056.5 1997 508804.96875 1998 540166.625 1999 571969.3125 2000 592953.75 2001 645428.625 2002 680901.4375 2003 736177.5625 2004 782720.125 2005 855223.9375 2006 934294.6875 2007 1029772.875 2008 1128992.75 2009 1245291.125 2010 1346728.25 2011 1430942.5 2012 1535155 2013 1680241.625 2014 1766105 2015 1875757.125 2016 1988057.5 2017 2075256.375 2018 2091776.625 2019 2215854.25 2020 2337344.75 2021 2403261.5 2022 2498659.75