Year	current US$
2003	0.01950354107986205
2004	0.39332675743165596
2005	0.3530838305620583
2013	0.8629589841183426
2014	0.08849921710290597
2017	0.14609976217956488
2018	0.7811147040736262
2019	0.8483342745970129
2020	2.222339739517276
2021	6.611310888421795
