Year	% of fertilizer production
1963	163.49056603773585
1964	141.7771677268162
1965	138.45205912933412
1966	147.27811112191978
1967	159.34920117259236
1968	216.94211169637438
1969	191.87416942714307
1970	181.3360602522421
1971	154.43584144891008
1972	151.53641460777047
1973	150.5584607643786
1974	143.89525070585378
1975	137.11377171362562
1976	132.6782502106038
1977	132.44364160000217
1978	128.61639353805796
1979	122.74673778398568
1980	124.04448671407637
1981	123.69315590235283
1982	129.0930547537721
1983	133.18012371809192
1984	134.85215241096765
1985	125.76407635970928
1987	129.37858923552702
1988	139.73228621665226
1989	134.08592069007457
1990	137.72662381909802
1991	142.8435125990272
1992	138.04904086160482
1993	124.33002628389993
1994	134.757115491972
1995	139.22671281339973
1996	133.57418761117677
1997	138.0621129317323
1998	134.8629887063467
1999	131.86600238500765
2000	130.13258105618334
2001	128.4280111653121
2002	135.1602524997951
2003	124.68945075246711
2004	123.34095131655404
2005	122.99813183081751
2006	119.22281447356478
2007	112.85808161961971
2008	108.68797446591932
2009	105.26651954674342
2010	104.09718797923792
2011	104.49269530775406
2012	104.96814605426364
2013	105.32598794694367
2014	100.02525065620897
2015	96.84179009656835
2016	104.20448579377205
2017	115.76961055713434
2018	117.68125694546782
2019	95.49711542900525
2020	102.97415920600378
2021	100.97302220221638