anchor.diff:  "Solomon Islands",SB,1991,2.19759525741379
   "Solomon Islands",SB,1990,2.11730215609845
   "Somalia",SO,2011,11427.68
  -"South Africa",ZA,2015,5.51605361299486
  -"South Africa",ZA,2014,5.36869120801709
  -"South Africa",ZA,2013,5.15794995791292
  -"South Africa",ZA,2012,4.94598101340261
  +"South Africa",ZA,2015,5.52905944549578
  +"South Africa",ZA,2014,5.37583159113659
  +"South Africa",ZA,2013,5.17692715481587
  +"South Africa",ZA,2012,4.93540907638054
   "South Africa",ZA,2011,4.77393824246457
  -"South Africa",ZA,2010,4.56860837703183
  -"South Africa",ZA,2009,4.3482486135524
  -"South Africa",ZA,2008,4.07542964506802
  -"South Africa",ZA,2007,3.8181695081832
  -"South Africa",ZA,2006,3.6011110863657
  -"South Africa",ZA,2005,3.4926147973888
  -"South Africa",ZA,2004,3.41870689089866
  -"South Africa",ZA,2003,3.29748142655419
  -"South Africa",ZA,2002,3.17905334433274
  -"South Africa",ZA,2001,2.87673820546371
  -"South Africa",ZA,2000,2.73341579336422
  -"South Africa",ZA,1999,2.56958613401583
  -"South Africa",ZA,1998,2.43759889462427
  -"South Africa",ZA,1997,2.28603202103195
  -"South Africa",ZA,1996,2.15317977175684
  -"South Africa",ZA,1995,2.03185368952453
  -"South Africa",ZA,1994,1.88201233446031
  -"South Africa",ZA,1993,1.75433308826504
  -"South Africa",ZA,1992,1.54207124078871
  -"South Africa",ZA,1991,1.37663234696969
  -"South Africa",ZA,1990,1.229145858619
  -"South Sudan",SS,2015,1.61487017110096
  -"South Sudan",SS,2014,1.62345323831716
  -"South Sudan",SS,2013,1.70265045317918
  +"South Africa",ZA,2010,4.57373618644386
  +"South Africa",ZA,2009,4.35312910462665
  +"South Africa",ZA,2008,4.08000392307608
  +"South Africa",ZA,2007,3.82245503641786
  +"South Africa",ZA,2006,3.60515298738756
  +"South Africa",ZA,2005,3.49653492175596
  +"South Africa",ZA,2004,3.42254406074551
  +"South Africa",ZA,2003,3.30118253247065
  +"South Africa",ZA,2002,3.18262152611132
  +"South Africa",ZA,2001,2.87996706756028
  +"South Africa",ZA,2000,2.73648378983069
  +"South Africa",ZA,1999,2.57247024743853
  +"South Africa",ZA,1998,2.44033486505861
  +"South Africa",ZA,1997,2.28859787222071
  +"South Africa",ZA,1996,2.1555965090668
  +"South Africa",ZA,1995,2.03413424997018
  +"South Africa",ZA,1994,1.88412471238906
  +"South Africa",ZA,1993,1.75630215851366
  +"South Africa",ZA,1992,1.54380206751814
  +"South Africa",ZA,1991,1.37817748444434
  +"South Africa",ZA,1990,1.23052545668827
  +"South Sudan",SS,2015,1.61158885533938
  +"South Sudan",SS,2014,1.62133835701689
  +"South Sudan",SS,2013,1.70290324807054
   "South Sudan",SS,2012,1.53104362413458
   "South Sudan",SS,2011,1.464513
   "South Sudan",SS,2010,0.969715811663648
  
positive.code: "Austria",AT,1992,0.930498
  "Austria",AT,1991,0.919711
  "Austria",AT,1990,0.916931
  "Azerbaijan",AZ,2015,0.317450343149134
  "Azerbaijan",AZ,2014,0.351746407967846
  "Azerbaijan",AZ,2013,0.356824622848663
  "Azerbaijan",AZ,2012,0.358975817122804
  "Azerbaijan",AZ,2011,0.360393820817594
  "Azerbaijan",AZ,2010,0.300111246505836
  
negative.code: "Iran, Islamic Rep.",IR,1992,158.115729552294
  "Iran, Islamic Rep.",IR,1991,125.033355009889
  "Iran, Islamic Rep.",IR,1990,102.848332752043
  "Iraq",IQ,2015,374.868646785476
  "Iraq",IQ,2014,495.26581833116
  "Iraq",IQ,2013,517.486492943866
  "Iraq",IQ,2012,520.719259570695
  "Iraq",IQ,2011,516.521250220508
  "Iraq",IQ,2010,422.798835824766
  