Year	% of fertilizer production
1961	19.94703563449412
1962	29.1812422977969
1963	34.03987942652449
1964	33.67465262870693
1965	35.934360899779335
1966	53.21443898717276
1967	60.237815475753344
1968	76.96226049932262
1969	69.8319139988435
1970	91.07578688236329
1971	78.032940546331
1972	80.53482468362887
1973	108.18526916833522
1974	106.74119537231861
1975	75.09598560423248
1976	98.45617613132951
1977	95.22436677462231
1978	116.49422068800897
1979	118.86704477055198
1980	106.95028603658045
1981	93.90620381621729
1982	95.78654679837965
1983	113.83515211640211
1984	130.42883013400942
1985	134.46254927726676
1986	169.19106327378103
1987	188.6381873325445
1988	186.17834394904457
1989	220.22695035460993
1990	196.59102564102565
1991	219.3548387096774
1992	208.10647307924987
1993	254.96688741721854
1994	247.40259740259742
1995	241.07142857142856
1996	143.97549353301565
1997	124.28571428571429
1998	114.07766990291262
1999	103.9816192560175
2000	92.60326609029778
2001	94.01980198019801
2002	90.84484732824427
2003	86.93674258225182
2004	83.70783043862231
2005	71.79031352859981
2006	82.4238865080251
2007	90.60232835328601
2008	69.69640396195545
2009	56.40966765227429
2010	62.024102955611305
2011	45.12788990825688
2012	43.623695244892495
2013	46.373647016727794
2014	45.93413897280967
2015	46.74509342125923
2016	39.91410498306725
2017	39.63932717448144
2018	37.080780217089696
2019	50.38985534297714
2020	49.53576130790191
2021	51.41789536784741