Year	current US$
1998	41229.01426808477
1999	43247.68599658619
2000	44318.22109692816
2001	42678.277029423334
2002	45279.64193567988
2003	49428.30975899571
2004	57200.46646392725
2005	58550.6571723349
2006	63665.31534744795
2007	75148.34943603809
2016	55411.704796706945
2017	54904.09966825506
2018	59433.37323602981
2019	58564.35009738532
2020	54357.93444805831
2021	64502.53117942733
2022	64501.27424195476