Year	constant 2015 US$
1994	209.31430591404546
1995	153.85268476166976
1996	156.15547143643857
1997	168.45680324653068
1998	154.84126485239779
1999	166.36672331704105
2000	222.32140600884534
2001	179.54793817198234
2002	181.28775327618666
2003	168.76666985218722
2004	196.11922990082317
2005	206.28785563404827
2006	223.8413788165993
2007	226.76769089863922
2008	202.77237288754836
2009	213.53766841992768
2010	250.59379263345727
2011	264.8094697348305
2012	290.1140711589105
2013	314.3104452477683
2014	308.7511070333104
2015	324.0933381731322
2016	326.9057800372976
2017	377.65569805971626
2018	422.1709374478386
2019	419.6503810277808
2020	425.0918774479181
2021	385.421231795481