Year	% of total reserves
1975	27.97210119166049
1976	33.1822420570656
1977	82.93050553730876
1985	261.8734174081724
1986	182.2709511908271
1987	147.73136085961332
1988	160.06468411573627
1989	136.90479512073676
1990	121.42244142214682
1991	116.20827158944513
1992	172.93930803804454
1993	190.04890143948282
1994	182.48350365381444
1995	188.4440033318303
1996	168.3342445466179
1997	129.6083524404166
1998	148.41100886750164
1999	134.0859156341366
2000	85.16466388644942
2001	81.70796268486552
2002	77.06029588007198
2003	84.39550885751719
2004	62.719776740684786
2005	52.695294941702294
2006	45.64575561298325
2007	41.71814827810688
2008	39.669868096008095
2009	37.850388948006376
2010	44.134837647797326
2011	39.62597448884662
2012	44.020641995950015
2013	46.56952890433838
2014	49.854973636947086
2015	50.1029281370534
2016	48.80402011087055
2017	54.038747404513806
2018	51.839419594041495
2019	54.82809384439978
2020	53.33582924951648
2021	48.883983548564835
2022	60.91926963421049