Year	% of fertilizer production
1961	239.71087890249376
1962	121.56480099706457
1963	173.94845475845142
1964	163.87277829747427
1965	212.57077658133068
1966	279.04503447264193
1967	414.7075879912566
1968	469.10942418070726
1969	465.8939428762458
1970	302.64174805030564
1971	269.6564885496183
1972	234.50573861532766
1973	311.4655172413793
1974	140.76718009478674
1975	174.26800865893986
1976	207.90153978543162
1977	297.40212186427345
1978	245.14109907083994
1979	218.3246530841354
1980	117.82473869738746
1981	109.29632254601135
1982	117.62277678713158
1983	118.44965379754721
1984	115.02860875244937
1985	103.86519143980202
1986	116.90772664306604
1987	120.8108181571079
1988	107.91709013105108
1989	136.97075599322372
1990	120.69614882652616
1991	143.13293464283146
1992	128.8509346872065
1993	139.3343266244097
1994	144.07443551601432
1995	127.76207414219829
1996	133.4416114151797
1997	128.2633131937614
1998	154.2766183233109
1999	194.5387959860288
2000	259.0504679202415
2001	236.6061780272291
2002	181.39640668812962
2003	152.16088404822165
2004	169.74232407425092
2005	166.44875771772044
2006	207.98630581125948
2007	199.20652198994532
2008	160.7021363873673
2009	205.39459436584212
2010	161.86197069093134
2011	142.4909405338027
2012	165.22377884255303
2013	177.68997969594642
2014	166.4850806217604
2015	159.2253333795959
2016	221.41318030242326
2017	188.9417948210459
2018	149.39229250035032
2019	141.6523899091131
2020	125.05846736772037
2021	115.98831985017411