Year	% of total reserves
1982	144.62433742742394
1983	103.69952461836081
1984	84.36748699646601
1985	80.8073383650884
1986	83.00398198780745
1987	72.83641267262634
1988	82.5254945348913
1989	91.4191044120064
1990	92.66991447789134
1991	85.06432189532477
1992	94.42499467924654
1993	96.4817601335719
1994	87.44850107792927
1995	83.36901701591857
1996	72.09670052511312
1997	66.41944335954469
1998	55.01682426919921
1999	48.89830346513558
2000	44.56013394843686
2001	43.41187464200405
2002	36.89203266671248
2003	34.6129857365971
2004	30.654417285266064
2005	28.234919453624855
2006	24.50243370270773
2007	20.274071815432915
2008	16.30944419286226
2009	15.352193827231552
2010	22.426083869930444
2011	25.814458751919762
2012	26.24505961037454
2013	30.423127819601333
2014	33.476187471539085
2015	27.380665232030974
2016	27.80402315032128
2017	32.47605865839445
2018	37.68754844133272
2019	36.87966940748189
2020	35.748817484806644
2021	39.532239425744514
2022	38.06630827308271