Year	% of fertilizer production
1961	119.26268597264136
1962	146.51576745954205
1963	153.4272387113105
1964	148.1941488980006
1965	147.7779657330659
1966	154.68393214906243
1967	162.07533191311435
1968	177.16920586599514
1969	163.53137201453399
1970	159.99723440015904
1971	151.18136738438972
1972	149.57111839334104
1973	151.63743749714672
1974	140.09848514203824
1975	142.80809057446146
1976	138.89699384120502
1977	141.1026628227416
1978	139.02994239557302
1979	137.8273208020836
1980	135.3585375653207
1981	130.33287661970954
1982	128.07711510048682
1983	126.68465673292324
1984	127.47933724335722
1985	121.70840041467974
1986	120.53291925072301
1987	120.0450874441589
1988	121.33360730755894
1989	120.25481733458057
1990	123.59979042486736
1991	126.04718049379825
1992	102.07878935120885
1993	100.17362269699366
1994	102.67007645755362
1995	100.14983465832024
1996	101.14886559014923
1997	105.65589160344379
1998	105.44924267350761
1999	102.80583197397169
2000	100.19478101625668
2001	99.23317115029069
2002	101.26965207913378
2003	99.32717991010755
2004	99.61542094354785
2005	98.8579782602752
2006	102.71318598098114
2007	101.94934400742271
2008	101.15044147222693
2009	107.44612256896775
2010	99.18496427931079
2011	100.98329484935905
2012	99.98434046446745
2013	102.57190675282402
2014	99.02788041567662
2015	95.42696898782954
2016	98.92867224285136
2017	102.88131550841919
2018	104.13831674523573
2019	95.83173525646579
2020	103.19358916272137
2021	100.89437157191985