Year	% of total reserves
1981	0
1982	0
1983	0
1984	0
1985	0
1986	13.699721226602948
1987	15.616883116883118
1988	14.33384379785605
1989	10.73812326616069
1990	15.76469756824183
1991	12.735234804317688
1992	14.703958181234384
1993	7.26875144776606
1994	17.32284921329143
1995	26.850945792187087
1996	35.96314760765295
1997	54.11454757089722
1998	80.01160998727202
1999	74.2131666530319
2000	85.97135326678658
2001	112.10240670351912
2002	94.78958150925222
2003	101.10924591875073
2004	82.24032984435911
2005	151.2184961468723
2006	86.96380892944711
2007	112.75240611387858
2008	360.6322282937297
2009	48.388177056259146
2010	109.2355247545816
2011	46.82398259871278
2012	19.06436862131877
2013	37.61055514572421
2014	45.66780964977578
2015	24.170785599780878
2016	26.679148072332065
2017	32.27268966578922
2018	31.876924702619558
2019	28.73611166749165
2020	33.65040180286083
2021	21.249893074522646
2022	25.059921955015458