Year	% of fertilizer production
1961	20.34211742949607
1962	20.961538461538463
1963	19.833333333333332
1964	20
1965	23.83808492086559
1966	17.5100453383184
1967	9.405555555555555
1968	10.727027027027027
1969	10.933333333333334
1970	8.799999999999999
1971	9.773784355179703
1972	9.15573053368329
1973	15.179791976225854
1974	9.653128430296377
1975	15.766160764474424
1976	16.046983633458563
1977	14.182367992556408
1978	17.328800786369595
1979	17.676756191299205
1980	19.43990835750323
1981	28.14609141392567
1982	15.365087848219655
1983	34.48428312480658
1984	9.115225415041618
1985	4.520663158028876
1986	2.261239691407289
1987	3.122043519394513
1988	0.8626661296818364
1989	1.477170993733214
1990	3.062985332182916
1991	3.366583541147132
1992	4.575786463298379
1993	2.2277227722772275
1994	2.3622047244094486
1995	2.66058532877233
1996	3.821912788567241
1997	3.81981981981982
1998	2.8250934773577066
1999	2.210144927536232
2000	3.343261896113331
2001	0.7345181307779982
2002	1.4183341871275341
2003	1.4779475446857442
2004	2.2460969853447788
2005	1.7435194544225416
2006	1.8497171876473504
2007	1.807733619237129
2008	1.7432321575061527
2009	1.7827831537179306
2010	0.7755755423640588
2011	0.780050315397206
2012	0.9891448662005243
2013	1.190843901273906
2014	1.479598166126849
2015	1.2796307853976931
2016	1.3483795100960878
2017	1.3294675639525264
2018	1.2157151442800056
2019	1.2059839249626305
2020	1.0860799469913092
2021	1.1159503742313854