Year	% of fertilizer production
1961	73.95842871531912
1962	80.83387116481526
1963	77.50483580320318
1964	74.58270275514164
1965	74.4889561852573
1966	76.89642849013225
1967	87.21450309571635
1968	90.57420449587387
1969	95.27885645602527
1970	100.1653828321853
1971	102.88338975752154
1972	111.5502862210925
1973	107.54869651965349
1974	84.94307815806758
1975	107.63700675272176
1976	112.96382343179556
1977	110.46617240141099
1978	113.04409071700239
1979	116.70586840076692
1980	113.90536149471974
1981	121.63354444201791
1982	127.06703464635176
1983	125.62998061598105
1984	123.60992301112061
1985	130.31350114416475
1986	138.0719492123207
1987	143.3431879773343
1988	149.02384500745157
1989	163.48100926769163
1990	152.05222882217583
1991	150.77214846924954
1992	143.0375749921061
1993	147.99099967855994
1994	175.43559195830233
1995	175.19429590017825
1996	173.12820512820514
1997	186.36482498412343
1998	206.46235274031076
1999	217.60666544588904
2000	255.53637484586932
2001	256.7600786627335
2002	279.50891257617786
2003	346.2066156826378
2004	321.87128430128826
2005	226.64910436213407
2006	163.90608357446717
2007	174.2774377984225
2008	138.36811153298507
2009	140.62566476426778
2010	159.26938206832858
2011	422.9790300253585
2012	499.9426063363251
2013	419.0879879859346
2014	605.5398851998053
2015	449.9064905916919
2016	505.1928665991472
2017	560.5960364853629
2018	423.0537060071706
2019	444.0426348763285
2021	1337.3716979755457