Year	% of fertilizer production
1961	185.3037333434437
1962	168.94365715470948
1963	176.60617022467443
1964	157.03407820790352
1965	154.0611765501048
1966	163.0849371513027
1967	169.7001581248889
1968	208.76329177787855
1969	180.66851429330157
1970	173.974806168619
1971	156.77253624076712
1972	160.4015172921058
1973	157.946950653745
1974	146.70258681227614
1975	143.18351668670337
1976	144.83350151654054
1977	145.31670057769782
1978	141.25557469141492
1979	134.26308076887975
1980	131.4964911435546
1981	129.5612080336305
1982	132.79686644522215
1983	129.88898401083233
1984	130.85691353652766
1985	123.26078683404826
1986	124.55213663981462
1987	130.34923288237525
1988	134.5908683902832
1989	129.00764766679825
1990	134.6089333018493
1991	139.7862334180154
1992	103.88762889462035
1993	101.6290932093534
1994	104.76430589417788
1995	103.60384322811882
1996	104.80665552340345
1997	107.57387049409151
1998	107.30864191718597
1999	103.12512233567297
2000	101.6237052148681
2001	100.66567947926379
2002	105.05192863937998
2003	99.95904664100217
2004	99.71414646612101
2005	96.40561648545254
2006	97.99373595411127
2007	96.3775094797118
2008	93.73663526432304
2009	97.82965140930831
2010	90.72620087998611
2011	94.63634271779758
2012	96.6075673715092
2013	97.10947210514674
2014	92.22932938993114
2015	86.65933210836711
2016	93.23451721161305
2017	98.48076791508473
2018	99.54367335761538
2019	86.77906795152626
2020	93.82266872201038
2021	92.95619114539465