Year	% of total reserves
1993	0.25777655060983856
1994	49.00032487348605
1995	9.701939023997681
1996	6.178583402268976
1997	16.99584315813555
1998	15.021514190163973
1999	23.908237354182248
2000	49.27378557789961
2001	16.662839593843838
2002	3.2305882125045224
2003	9.389247673084073
2004	58.01573045046
2005	21.602519723336165
2006	25.269802262022477
2007	27.13554458756017
2008	31.90274129599386
2009	26.749234026912156
2010	11.331274199950915
2011	10.269439190308116
2012	10.33269996808022
2013	13.749575952420562
2014	15.981395962652103
2015	19.791039160625573
2016	18.394802547042072
2017	16.34946030116191
2018	21.20036887196801
2019	21.27686213378205
2020	18.664147259134225
2021	18.05917827698309
2022	33.39479095926303