Year	constant 2015 US$
2002	12804.435844442607
2003	12980.722295686151
2004	13105.169077889199
2005	13136.48008059439
2006	12690.529110499063
2007	13029.61628437352
2008	12795.024557750838
2009	12378.170194566459
2010	12532.311123711053
2011	12656.688138914153
2012	12247.635288214824
2013	12098.275150543515
2014	12494.980211030686
2015	13101.541815916524
2016	13116.430976920077
2017	12442.857665371896
2018	13049.330153617599
2019	13288.356556511633
2020	14214.646460055672
2021	14464.814050479823
2022	14969.059942621792