Year	current US$
2000	26.243892369300138
2001	26.482549275909
2002	26.300288581227747
2003	29.8529238255147
2004	35.059515438256724
2005	42.109733128024885
2006	50.170843773544334
2007	61.970917386601954
2008	78.0110581772688
2009	81.28176740755485
2010	93.08857521324899
2011	109.00368138885807
2012	117.38224790304264
2013	127.19692114069723
2014	131.60210921076435
2015	126.66721275263457
2016	123.84839510288369
2017	134.32188957065065
2018	141.22336138534578
2019	144.70939087033702
2020	152.4445774491324
2021	172.83622085115934