Year	% of total reserves
1970	178.28079238444488
1971	120.29089210772356
1972	67.94575715038515
1973	50.32017041186878
1974	59.39665927091596
1975	100.03837865723527
1976	116.482525433494
1977	492.3589257737874
1978	440.8274974026907
1979	140.15224641934748
1980	75.84710872666456
1981	90.7443482027217
1982	63.190193692012194
1983	83.8299017438151
1984	130.40701326645473
1985	205.34663765159547
1986	217.99088470581472
1987	209.96152721913853
1988	164.0155296563041
1989	91.21657678059162
1990	124.57219590905785
1991	137.79810653113677
1992	159.82557061894727
1993	195.18907991971156
1994	105.79202541433095
1995	85.82732748697563
1996	78.66094963210482
1997	76.29652285538715
1998	89.05658560858862
1999	79.96307876348538
2000	105.9417169883904
2001	92.51220050010261
2002	76.89877706695145
2003	77.8311840456717
2004	86.56010894962334
2005	78.52700701242007
2006	66.98292261142869
2007	62.435374336994556
2008	65.70421046517617
2009	62.252493546331564
2010	79.41714841189957
2011	80.64051759823514
2012	80.95108213123693
2013	82.79241417551151
2014	83.28349167312186
2015	70.49980097480638
2016	63.52053453571083
2017	68.21371684331724
2018	65.17322785285756
2019	61.33469574955707
2020	66.3910545330647
2021	64.27177833890599
2022	71.59120988254156