Year constant 2015 US$ 1995 5075075751.103676 1996 5043866851.139513 1997 5358845654.144483 1998 5506041337.746186 1999 5764233052.666851 2000 6142569845.790615 2001 6230090080.294508 2002 6356002005.975768 2003 6625259539.757265 2004 6850911731.5187845 2005 7015341609.462704 2006 7280259112.599814 2007 7774580137.511415 2008 7794163032.130008 2009 6814649836.293295 2010 6455887172.739145 2011 6484369809.620917 2012 6150990062.209658 2013 5998031969.129275 2014 6211352291.727458 2015 6471635192.0045 2016 6888552846.033594 2017 7108456497.064819 2018 7104359890.692074 2019 7232278235.939587 2020 6816560838.870664 2021 7625877753.085243 2022 7851551912.944203 2023 7681400011.3169