Year	% of fertilizer production
1963	866.6666666666666
1964	209.22173913043477
1965	205.43043478260873
1966	353.66829268292685
1967	287.95454545454544
1968	644.6745843230403
1969	452.94402035623415
1970	530.6139130050589
1971	471.33755318045036
1972	752.9136594493451
1973	593.6936162900593
1974	412.99058149735987
1975	235.71084337349396
1976	267.4267100977199
1977	155.3648068669528
1978	109.99086513246998
1979	92.01005986890773
1980	99.56220722926744
1981	118.39995113111115
1982	132.09831394519574
1983	106.97415464005336
1984	105.87472515081468
1985	89.06605922551253
1986	87.21689830596475
1987	88.16895470683112
1988	95.97663352547488
1989	79.84786577503901
1990	81.97731593784829
1991	82.51452538934919
1992	90.85473091804432
1993	76.69823531164243
1994	80.01427088738973
1995	80.36349771225217
1996	81.2803016699587
1997	68.00793771943215
1998	87.0274064384392
1999	80.34302605348181
2000	81.85339592292289
2001	94.70279071403598
2002	111.657852359229
2003	111.02429715840387
2004	123.18504032313315
2005	102.58299306273346
2006	109.02760617475631
2007	121.07957588805036
2008	118.39740502307576
2009	103.47849512721008
2010	105.94023534509151
2011	113.83042896505897
2012	131.48635396489826
2013	127.4874643316514
2014	139.60056430474162
2015	139.80988622892144
2016	142.10225442783994
2017	147.70299497373816
2018	147.3186414240027
2019	122.91646838919765
2020	131.75994200050255
2021	154.4813699758473