Year Number 1970 346879.15625 1971 368059.1875 1972 400067.59375 1973 414845.1875 1974 457206.25 1975 475544.09375 1976 488133.71875 1977 529813 1978 608049.75 1979 673646.1875 1980 705253.75 1981 770825.4375 1982 824377.375 1983 876204 1984 877684.6875 1985 858921.75 1986 819741.375 1987 819504.875 1988 846280.375 1989 898991.5625 1990 896840.625 1991 944346.1875 1992 1006676.8125 1993 1079421.875 1994 1111238 1995 1123912 1996 1153596.375 1997 1191653.625 1998 1234643.25 1999 1239562.75 2000 1279744.75 2001 1312128 2002 1312918.125 2003 1442661.625 2004 1454147 2005 1477056.5 2006 1430810.75 2007 1373594.875 2008 1368152 2009 1456379.625 2010 1509054.75 2011 1623038.375 2012 1465665.5 2013 1700896.125 2014 1773361.625 2015 1826657.375 2016 1873731.5 2017 1967097.625 2018 2073325.125 2019 2008998.375 2020 1981317.5 2021 2080436 2022 2103819.25