Year constant 2010 US$ 1970 15056.8259245209 1971 15418.3910473011 1972 16077.1350026843 1973 16875.2890686417 1974 16378.194896517 1975 16287.4033051244 1976 16864.5923901438 1977 17274.7405205818 1978 17955.2691664718 1979 18092.7024486425 1980 17872.5964015749 1981 18044.3784896743 1982 18053.3870897262 1983 18261.7310997843 1984 18993.55372612 1985 19613.149226813 1986 20201.0118231862 1987 20781.8649512166 1988 21697.4627781392 1989 22223.9364481823 1990 22657.6958549048 1991 22797.8936717949 1992 23061.2949998924 1993 23168.4872399814 1994 23715.1958624078 1995 24251.8059714792 1996 24873.1042106879 1997 25625.1308031822 1998 26329.6835131565 1999 26937.8668415074 2000 27679.7569353944 2001 27906.1604350729 2002 28099.3358383688 2003 28474.3903427651 2004 29270.470169614 2005 29743.6496485601 2006 30385.1220240555 2007 30738.910465076 2008 29967.1237551522 2009 28926.6057981665 2010 29735.5017477791 2011 30063.7768001726 2012 30437.1659715462 2013 30659.1069669772 2014 31244.9637962725 2015 31988.7225600806 2016 32268.3150490236 2017 32919.000761162