Year	% of fertilizer production
1961	72.70771578302254
1962	70.0713588660904
1963	63.88373540297002
1964	64.59335402386968
1965	68.0343108867649
1966	67.70782624377708
1967	61.993120202075424
1968	63.485113260104065
1969	73.85240616049067
1970	82.5687309235015
1971	85.5090559921484
1972	91.95749227829289
1973	82.66120131875621
1974	74.53178473435138
1975	107.80523175874974
1976	95.07161166675061
1977	107.51944114933438
1978	117.21295766859987
1979	111.9144881145038
1980	112.46743534607884
1981	123.5357787926313
1982	114.9385736700045
1983	123.33625477871395
1984	110.00323596498845
1985	120.23239944738711
1986	132.74677440004552
1987	122.56508049996985
1988	105.9499650291036
1989	104.54318985730053
1990	162.9813044003058
1991	138.72177301101846
1992	162.6057529610829
1993	231.90012180267968
1994	209.54595791805093
1995	207.99086757990867
1996	254.43383356070945
1997	248.65629420084866
1998	283.76623376623377
1999	321.44144144144144
2000	318.38235294117646
2001	297.86292372881354
2002	274.97013906663256
2003	264.94189139573047
2004	219.44684057250362
2005	314.27089727578687
2006	401.93582742847997
2007	864.8241365319267
2008	245.7859617200962
2009	252.3414971497565
2010	321.93867061564777
2011	370.6326870661429
2012	288.67003227675247
2013	193.1710508752005
2014	214.14129271959385
2015	222.300336398701
2016	190.18146558891556
2017	230.92815748321223
2018	229.41613992667254
2019	232.61127245489308
2020	244.6258696137824
2021	251.84131043273717