Year	% of total reserves
1974	1.0465090328041657
1975	0.24245593960502548
1976	0.31062549064400263
1977	91.88479454772384
1978	495.81389358691814
1979	136.95459591670576
1980	1489.6665889908256
1981	968.8597702589275
1982	1224.3074332146614
1983	285.67039419494023
1984	2119.5582252158324
1985	7391.384863220209
1986	10518.757473794882
1987	79412.68398011313
1988	113054.33890056895
1989	6468.2294436586035
1991	56912.14594768565
1992	78593.21562810578
1993	34122.82432372202
1994	17331.154033122217
1995	3481.0434987574345
1996	265119.9346828317
1997	249907.64697244382
1998	188255.99937228925
1999	277947.1113778088
2000	527646.7814931687
2001	343758.6994722797
2002	55554.75966823447
2003	28166.64321417417
2004	11955.374533216955
2005	9536.53481672684
2006	3640.367376137682
2007	1976.68990030685
2008	873.7305939960075
2009	24.594660629126334
2010	0.09998986186711856
2011	2.406076698504807
2012	2.091583878533875
2013	1.9274693940206453
2014	0.003774509161417119
2015	0
2016	0
2017	0
2018	0
2019	0.019084942006312576
2020	0
2021	0
2022	0