Year	% of total reserves
1993	3.040659189929237
1994	19.10467570609983
1995	22.977925247136547
1996	11.287334853902797
1997	15.70096452382978
1998	21.563709599393828
1999	23.69384844358238
2000	45.7843652954967
2001	53.55395854461909
2002	58.64663742723681
2003	56.68748605231367
2004	42.502449680068075
2005	114.60771389710402
2006	65.0660269716875
2007	65.35721079510355
2008	47.71270221492672
2009	30.13031504586522
2010	31.362413456063358
2011	29.969291173673696
2012	32.1079076002143
2013	38.461138889852144
2014	33.438564503368255
2015	22.47488023510501
2016	22.74227978835016
2017	24.97282107375378
2018	27.006858857160264
2019	31.15584185759347
2020	28.06255648946389
2021	36.68443899628323
2022	47.4679576663042