Year	current US$
1993	2685.908892873569
1994	2819.1261210092607
1995	3134.3897534540665
1996	3380.92630243199
1997	3682.9523014669467
1998	4093.392477387645
1999	4140.936602321673
2000	4070.6090241020797
2001	4505.8583323318835
2002	5341.628946770022
2003	7203.523037866463
2004	8914.103556744512
2005	10412.644313796647
2006	12639.400067729612
2007	16744.584451634262
2008	18204.966478676226
2009	14711.735272822296
2010	14663.044612646472
2011	17487.804783092168
2012	17403.205325476698
2013	19056.001922698946
2014	20261.066730388637
2015	17402.037612807875
2016	18295.342932211355
2017	20437.765376735962
2018	23165.849478643726
2019	23581.656836881997
2020	23565.175943796887
2021	27698.47934502669
2022	28114.143176020094
2023	29823.749606901583