Year	% of fertilizer production
1966	7389.6247240618095
1967	1123.82921649715
1968	1103.3333333333333
1969	1313.75
1970	704.3017293821152
1971	1245.397997861794
1972	2070.4389485951056
1973	2038.2033161185107
1974	2992.874144599821
1975	4191.461144718474
1976	3460.303561004086
1977	3057.303370786517
1978	8225.714285714284
1997	1495.959595959596
1998	998.1707317073171
1999	1255.7179487179487
2000	987.9025316455695
2001	973.4520231213872
2002	945.8059574468086
2003	1405.766401516096
2004	1065.3332216460576
2005	1027.174184569267
2006	1306.1434183673468
2007	1529.5401386861315
2008	1440.2501751824816
2009	1396.2511751824818
2010	1832.4731824817516
2011	2574.1045
2012	2302.653690909091
2013	2625.959746954077
2014	2507.9520375586853
2015	2102.598676470588
2016	2181.999295774648
2017	1904.3141836734694
2018	1585.5055198358416
2019	1492.3149881422923
2020	1934.505829823083
2021	2013.5185425442291