Year	% of fertilizer production
1992	72.48350195518998
1993	74.17022170331231
1994	70.24551383300056
1995	64.95496266093708
1996	66.68430199274553
1997	66.82877206282885
1998	68.53017369624236
1999	65.3260699016168
2000	64.19405290041144
2001	61.61279897127657
2002	57.92623447151149
2003	56.89255808518339
2004	52.550850984562054
2005	49.28111973660407
2006	51.91376403434643
2007	52.325598515757434
2008	48.889706958862156
2009	63.57027340062445
2010	52.35047735829687
2011	50.69560418060855
2012	53.706340316328316
2013	54.53388210513093
2014	51.39325451018401
2015	50.77707183885035
2016	52.907204859486676
2017	51.59185416131156
2018	49.8489259197936
2019	49.67542998936597
2020	51.04871733859126
2021	48.49418483374423