Year	% of total reserves
1981	0.01586078074326968
1982	0.028077425433006613
1983	0.004201512150244005
1984	0
1985	1.8478638319146572
1986	12.191650105712231
1987	12.89207494604027
1988	5.552539958287674
1989	3.258141612559837
1990	6.0425188608216
1991	7.233840891043172
1992	7.9275609234712
1993	12.059268982952046
1994	23.235625304677665
1995	79.19911058870251
1996	21.504282792267386
1997	35.99808569236257
1998	66.23908592617231
1999	44.24115643679743
2000	13.86113418734328
2001	7.926936616448417
2002	4.048426360072481
2003	1.9260009277144385
2004	0.7510275756911597
2005	0.5389056652600994
2006	0.2832719052379242
2007	0.3531229758467773
2008	0.39880261692888047
2009	0.3666965085472305
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0
2019	0.007495081251294226
2020	0
2021	0
2022	0