Year DOD, current US$ 1981 3008900 1982 4077203.2 1983 10619149 1984 12939707.6 1985 15762868.4 1986 18237361.2 1987 23649703.4 1988 26778350.6 1989 30315049.9 1990 38217710.6 1991 34869375.1 1992 36227064.6 1993 40189501.8 1994 45581300.9 1995 48945486.7 1996 47879676.1 1997 48734564 1998 64167377.7 1999 87977202.2 2000 112263772.8 2001 122663924.1 2002 160584256.7 2003 161146227.6 2004 153931970.5 2005 100347467.5 2006 110583704.2 2007 127898893.3 2008 148880846.8 2009 153308882.3 2010 177656192.9 2011 178444531.3 2012 182211940.2 2013 158471630.7 2014 203273624.2 2015 256793136.3 2016 293420900.7 2017 401420199.8 2018 402236822.4 2019 441265525.7 2020 455667428.4 2021 490856951.6 2022 484476173.2