Year	constant 2010 US$
2007	4579.71957601175
2008	4358.72402075499
2009	4131.34524588717
2010	4134.57238524099
2011	4125.28911753563
2012	4175.06755177446
2013	4091.70609526277
2014	4066.63692201852
2015	4147.50308167553
2016	4188.19616519765
2017	4226.12527739913