Year	constant 2010 US$
2000	18499.6439467667
2001	24165.3200342767
2002	18617.4848675423
2003	22622.4210001616
2004	18756.0027258845
2005	18371.876287639
2006	18852.27352832
2007	23492.1742983606
2008	14512.2050513347
2009	15101.0847528783
2010	15566.7335092935
2011	15484.2662787944
2012	14905.9496007631
2013	15214.8556601443
2014	14613.8970041764
2015	13251.3852316035
2016	13190.7869264721
2017	12617.1635112837
2018	12634.7099262166