Year	% of total reserves
1993	0.14720096129342022
1994	2.95386606132214
1995	1.9247670585887013
1996	0.8323341801498834
1997	9.196326720805057
1998	15.407810742387824
1999	16.21024229948456
2000	14.13715880051671
2001	12.732956955432478
2002	51.04712439547156
2003	80.48176511136217
2004	74.85045387081114
2005	44.48972614786994
2006	28.627190714781964
2007	30.175389116747205
2008	37.01888649230868
2009	26.410551899401696
2010	35.144949130672835
2011	46.7634718982848
2012	46.795875305936114
2013	51.069007047989324
2014	60.977209184569425
2015	37.382663899507826
2016	48.61903713926215
2017	38.402041503220346
2018	50.179835630797264
2019	55.958299994850066
2020	61.28282412939055
2021	47.183984475797445
2022	78.84876602643439