Year	% of total reserves
1970	120.62863068246568
1971	71.59602853514338
1972	89.56650370728904
1973	92.18344398668455
1974	10.62939581485392
1975	9.59715401097028
1976	8.209581555684977
1977	49.84232989713549
1978	120.58657257590156
1979	38.69726315480764
1980	33.39417609892747
1981	106.20808881775388
1982	131.57660268379723
1983	404.07044344908155
1984	343.13200731815294
1985	263.9965715518987
1986	272.7304394644436
1987	104.71447336728346
1988	165.87788344735674
1989	22.770845512832253
1990	36.416281517787844
1991	18.354981786055774
1992	184.7378999243935
1993	241.23432028889633
1994	292.65936440273396
1995	330.65065163041737
1996	131.1065212015919
1997	71.0505363241348
1998	89.94196574064466
1999	110.57841242501996
2000	11.08927678814204
2001	15.430445204348
2002	30.0016599932478
2003	45.17807414278614
2004	30.398597921309523
2005	19.251502271448057
2006	13.137299337960625
2007	12.453684550954172
2008	11.549944390223565
2009	13.394789564684961
2010	28.345889453400574
2011	33.759083188349365
2012	34.49794076707775
2013	35.12753812570097
2014	36.04795323429262
2015	30.490078765452143
2016	23.29562085420524
2017	43.14115347515056
2018	32.20962476811721
2019	54.40964260775314
2020	50.1605514548833
2021	45.88892021585784
2022	61.51922389773341