Year	% of total reserves
1999	50.413557645350814
2013	0.493290815154455
2014	0.6323416562289228
2015	0.6628969850778011
2016	1.4799647008910173
2017	2.6361781073740107
2018	3.312761713249813
2019	2.2962190630549717
2020	6.806917420301215
2021	10.069892013525617
2022	17.260804664890443