Year	% of total reserves
1992	19.822409759871917
1993	96.81215382933611
1994	62.78802356273292
1995	20.898875963116996
1996	22.510121970692918
1997	46.16580516545522
1998	60.454975216266135
1999	28.840003946563815
2000	30.26899051940225
2001	277.0122307035393
2002	197.5245414794748
2003	129.78550491665675
2004	107.42469155755678
2005	62.21832805707835
2006	68.69797543778154
2007	70.53875010248795
2008	65.42022145584059
2009	74.99140592327363
2010	78.86256474380572
2011	102.95013508435606
2012	141.53370678038343
2013	170.5879289907087
2014	300.9675202863265
2015	150.46431400592095
2016	130.1569505184477
2017	118.33055348197443
2018	99.38579288735265
2019	86.99832702790964
2020	80.32779718545012
2021	71.91060793220669
2022	54.12538014342881