Year	constant 2011 international $
2007	4048.80259682561
2008	5415.41022894878
2009	5855.95010014118
2010	6605.61512027521
2011	7339.30436698258
2012	7905.08875483864
2013	10078.3913558214
2014	12561.4463359568
2015	12270.2975919501
2016	12950.5289813432
2017	13669.813248621
2018	13372.980237793