Year constant 2010 US$ 1990 37080.905766838 1991 37171.4749076551 1992 37848.1292503919 1993 36913.6461243111 1994 37052.2679690634 1995 37713.6899412144 1996 37842.9279965812 1997 36409.3719864638 1998 35390.7901840577 1999 35680.9788660012 2000 35931.5965013377 2001 36171.8050676004 2002 36841.2942129897 2003 37212.4669053931 2004 36761.2498220737 2005 36329.4982777345 2006 37399.74000641 2007 37174.0966083686 2008 36010.2760284375 2009 34961.2223037168 2010 35011.0229430783 2011 34962.8418389731 2012 34927.9007621144 2013 34284.2668249057 2014 33436.2848153282 2015 34451.9962154891 2016 33747.1678966708 2017 33614.8434175694