Year	% of total reserves
1984	152.15790665620435
1985	344.78446549804653
1986	505.01098436588575
1987	266.46833977123134
1988	191.68341573673402
1989	213.7210757660431
1990	148.51658196987026
1991	102.4031775170932
1992	101.7044596620031
1993	87.1341466837428
1994	106.02387084793577
1995	142.52936206996404
1996	52.79023605061486
1997	59.35795235765657
1998	58.28524398670445
1999	59.592365006237344
2000	76.39428884795065
2001	75.00960306553922
2002	52.44484046337716
2003	44.88777504280961
2004	67.66286701899136
2005	64.75353664553282
2006	47.482743027572326
2007	33.84000171189537
2008	34.94978515991339
2009	29.154391261721006
2010	26.93759157866127
2011	11.686702507979662
2012	12.68705227243358
2013	22.372051036466853
2014	14.446499012946894
2015	31.851036929046067
2016	28.977967895228545
2017	32.90359616686472
2018	40.18322967497113
2019	39.82117618535345
2020	42.64384672936651
2021	49.19776120537496
2022	26.715858110596724