Year	% of total reserves
1994	234.88038800356938
1995	216.7105873498302
1996	462.70539167235205
1997	183.43840696984893
1998	207.7685076858046
1999	144.26385157293288
2000	124.0317343184037
2001	109.54709244671233
2002	103.03468940090615
2003	137.29308026033885
2004	91.00381556729403
2005	85.15166395398191
2006	95.32550097265793
2007	88.77135293882922
2008	92.17099350212385
2009	73.69204837733409
2010	73.19336485982288
2011	60.14573618016023
2012	71.973531346929
2013	72.90953666594734
2014	86.4162147087791
2015	80.68504575186094
2016	78.8467563107333
2017	80.60660364806044
2018	92.69230684350379
2019	80.81968531347255
2020	67.40232035990883
2021	63.01006254852878
2022	70.9278150498455