Year	% of fertilizer production
1961	151.530929437364
1962	151.67760549911318
1963	154.31952578305
1964	140.29032401703947
1965	120.34088474012295
1966	94.53547607289107
1967	95.32449143512238
1968	105.67817627015704
1969	117.93349488875931
1970	128.8416166775077
1971	125.7685572925675
1972	110.05123666866625
1973	128.9406835525298
1974	116.25981980790287
1975	138.32691463431487
1976	144.50485225479883
1977	115.9618734537305
1978	109.93914248202925
1979	113.84493862392743
1980	112.50925672876022
1981	130.03672642961618
1982	116.98912550549628
1983	92.82953552349247
1984	82.88552091973055
1985	73.29074045427399
1986	72.86267556126735
1987	70.2286147097206
1988	58.703364812602864
1989	56.35232237300779
1990	56.83672982552969
1991	57.59423353263621
1992	58.67465768975621
1993	55.22338147847126
1994	53.131067586662745
1995	52.95499847755731
1996	51.75222355538916
1997	58.680292279016335
1998	54.47165653381115
1999	55.71494043436114
2000	54.420445921604234
2001	50.7212854093918
2002	52.22064663897418
2003	50.569436782401006
2004	54.0755919560027
2005	57.07183510387602
2006	59.25414713218357
2007	50.2812556452944
2008	48.21621786569154
2009	46.20359262802208
2010	35.757261768972434
2011	33.352632204251236
2012	32.04018329947281
2013	34.52045335984451
2014	33.67383090456193
2015	32.6724574610905
2016	27.655872187766615
2017	24.685440415484006
2018	24.84875413330135
2019	23.85736767790827
2020	23.363923172023945
2021	23.410487622535307