Year Number 1976 1034760.5625 1977 1086789 1978 1115796.25 1979 1157998.5 1980 1192393 1981 1202788.625 1982 1217138.125 1983 1222793.25 1984 1224196.375 1985 1235406.5 1986 1249308 1987 1260138.625 1988 1260603.5 1989 1261644 1990 1290952.875 1991 1326676.25 1992 1347654.375 1993 1383752 1994 1418371.75 1995 1371598.375 1996 1368596.625 1997 1367568.25 1998 1353551.375 1999 1363887.375 2000 1401070.5 2001 1462657.875 2002 1470541.625 2003 1479714.375 2004 1490291.75 2005 1518322 2006 1511553.875 2007 1532603.5 2008 1526325.125 2009 1530783.25 2010 1529765 2011 1526633.625 2012 1512622.25 2013 1503811.75 2014 1507795.75 2015 1513420.625 2016 1549013.25 2017 1566574.25 2018 1575440.625 2019 1583987.75 2020 1603351.5 2021 1638127.25 2022 1646112.125