Year	current US$
2000	565.09425348
2001	589.02325408
2002	606.39489996
2003	620.77908501
2004	636.72423568
2005	685.50747321
2006	756.06495144
2007	791.67810874
2008	797.50159138
2009	752.25674819
2010	772.76369458
2011	777.67953622
2012	834.71715855
2013	824.71386833
2014	866.92363958
2015	858.26125285
2016	865.24202581
2017	921.12853004
2018	946.9453619
2019	906.18394407
2020	710.8925978
2021	858.7634686