Year	% of total reserves
1995	857.4260168140281
1996	210.28209327378104
1997	322.71148217380073
1998	832.0970733430045
1999	322.6474206621284
2000	110.40745174090196
2001	198.27460074886895
2002	321.53865022707913
2003	169.41761059182525
2004	86.71602127735596
2005	72.44785632798616
2006	26.168418678278943
2007	20.27280723290807
2008	13.378377863578336
2009	18.973541327408856
2010	23.211300796592006
2011	22.417605674796498
2012	27.906472751332874
2013	36.0037508962391
2014	28.336415012173433
2015	25.432495305181153
2016	18.60372739273803
2017	21.24358088326742
2018	18.375449008921223
2019	15.814696290216048
2020	38.82273893218432
2021	32.06585237340423
2022	30.70434386399713