Year	% of fertilizer production
1961	158.82908460240907
1962	146.98961581317826
1963	146.70332339984452
1964	170.15423662631784
1965	167.49838767466858
1966	157.52216527080498
1967	123.83191196149313
1968	131.8940760609831
1969	104.73138830797599
1970	116.28737429607368
1971	122.31138595749466
1972	122.81564237157538
1973	125.24354620039973
1974	126.9830259265188
1975	135.14004125496118
1976	136.13565020308278
1977	133.72967681554465
1978	124.57621769269613
1979	134.53595391071386
1980	148.96801551583195
1981	165.73150765200606
1982	177.97218945589086
1983	156.52242003583197
1984	132.17449908956476
1985	137.9888518194584
1986	142.69536864638377
1987	127.46483072510632
1988	111.93910917947326
1989	118.4518094098758
1990	114.72588407616657
1991	119.67896271944731
1992	111.3311216379547
1993	127.82798312937304
1994	126.72352383569942
1995	107.14339556490489
1996	108.83557626095606
1997	110.252004222342
1998	113.47724422146568
1999	118.89545955325676
2000	139.90613341033014
2001	144.48073639670403
2002	202.37631248254678
2003	190.94168141510426
2004	221.00288291338947
2005	240.88027363311377
2006	274.09380888696717
2007	223.23592370445954
2008	263.3211449292335
2009	285.1808749631099
2010	342.3801073904441
2011	337.99728517421715
2012	246.38569295064818
2013	362.7298121608685
2014	341.65222433463515
2015	418.46369290578724
2016	365.8847065147246
2017	399.03124626294846
2018	378.52164507479085
2019	437.463294924836
2020	479.4132782703514
2021	460.29695894736295