Year	% of total reserves
1992	0
1993	1.1376314584058835
1994	4.474975500387884
1995	2.320153693411805
1996	8.587694763303796
1997	1.0951249294223282
1998	14.674712323729471
1999	8.641106943288701
2000	216.13144708694426
2001	190.57950777488307
2002	181.73144858548028
2003	178.9255061118266
2004	125.92679093379633
2005	120.10734191896375
2006	108.5956505349449
2007	80.90105878072926
2008	81.19599100569448
2009	92.25326479949464
2010	85.62907041175232
2011	84.23144007149205
2012	51.66180520421446
2013	64.82566571237611
2014	68.40933579600616
2015	68.98350006019551
2016	60.33679812945372
2017	58.83759614504562
2018	62.263664108864894
2019	57.77366254167554
2020	52.75821846244631
2021	60.232570658599435
2022	54.71304698727874