Year	% of total reserves
1993	84.4752533421994
1994	136.909949006288
1995	57.4818634575453
1996	74.58682508330534
1997	34.44523286478104
1998	124.37818584293554
1999	126.7756089584766
2000	56.5159326749957
2001	52.25957528250207
2002	33.76782171252657
2003	38.84416308548637
2004	20.94801846629802
2005	14.884707213482312
2006	13.365498300877812
2007	20.939431372321188
2008	17.40822827093292
2009	12.08544610752943
2010	12.564856217382362
2011	14.049940713540524
2012	15.228588072265984
2013	16.480538784267846
2014	16.315467249556477
2015	13.201448354282899
2016	13.539239239749037
2017	12.931373908271121
2018	11.565465332827204
2019	12.30340902712005
2020	10.364799541474873
2021	12.172241218741721
2022	11.271252832631719