anchor.diff:  "Rwanda",RW,2013,302.894805908203
   "Rwanda",RW,2012,299.239135742188
   "Rwanda",RW,2011,276.649230957031
  -"Rwanda",RW,2010,263.453660797428
  -"Rwanda",RW,2009,258.269626214471
  -"Rwanda",RW,2008,242.889152085186
  -"Rwanda",RW,2007,216.328123980876
  -"Rwanda",RW,2006,196.702141249173
  -"Rwanda",RW,2005,197.784708474669
  -"Rwanda",RW,2004,187.078706972539
  -"Rwanda",RW,2003,172.937680414148
  -"Rwanda",RW,2002,146.34243714102
  -"Rwanda",RW,2001,156.869803184995
  -"Rwanda",RW,2000,158.493497247255
  -"Rwanda",RW,1999,156.903656950807
  -"Rwanda",RW,1998,164.969531153985
  -"Rwanda",RW,1997,163.190094147738
  -"Rwanda",RW,1996,143.575482011969
  -"Rwanda",RW,1995,131.808986014091
  -"Rwanda",RW,1994,88.9639967572874
  -"Rwanda",RW,1993,77.5345207151968
  -"Rwanda",RW,1992,69.7033287960709
  -"Rwanda",RW,1991,66.4519221435784
  -"Rwanda",RW,1990,59.7493470761916
  -"Kiribati",KI,2019,1.00353202407101
  -"Kiribati",KI,2018,0.98367628283515
  -"Kiribati",KI,2017,0.956728960228419
  -"Kiribati",KI,2016,0.965450820285795
  -"Kiribati",KI,2015,0.973754754970551
  -"Kiribati",KI,2014,0.950775679389188
  -"Kiribati",KI,2013,0.924841984354039
  -"Kiribati",KI,2012,0.939796578952733
  +"Rwanda",RW,2010,263.476889085317
  +"Rwanda",RW,2009,258.319523266988
  +"Rwanda",RW,2008,242.926848453574
  +"Rwanda",RW,2007,216.365674466764
  +"Rwanda",RW,2006,196.738293977354
  +"Rwanda",RW,2005,197.823327120138
  +"Rwanda",RW,2004,187.096524930759
  +"Rwanda",RW,2003,172.941307844779
  +"Rwanda",RW,2002,146.340676959929
  +"Rwanda",RW,2001,156.859958239144
  +"Rwanda",RW,2000,158.483550413819
  +"Rwanda",RW,1999,156.881576331567
  +"Rwanda",RW,1998,164.946315458962
  +"Rwanda",RW,1997,163.167128855427
  +"Rwanda",RW,1996,143.555277029482
  +"Rwanda",RW,1995,131.790436897487
  +"Rwanda",RW,1994,88.9514771050978
  +"Rwanda",RW,1993,77.5236095024912
  +"Rwanda",RW,1992,69.6935196456367
  +"Rwanda",RW,1991,66.4425705442787
  +"Rwanda",RW,1990,59.7409387158249
  +"Kiribati",KI,2020,1.00418067162645
  +"Kiribati",KI,2019,1.00620387658839
  +"Kiribati",KI,2018,0.98477828073412
  +"Kiribati",KI,2017,0.957473316875944
  +"Kiribati",KI,2016,0.966167626086489
  +"Kiribati",KI,2015,0.974612547604703
  +"Kiribati",KI,2014,0.950775679369776
  +"Kiribati",KI,2013,0.924841984371544
  +"Kiribati",KI,2012,0.939796578965702
   "Kiribati",KI,2011,0.961621381691926
  -"Kiribati",KI,2010,0.963619596385929
  -"Kiribati",KI,2009,0.963492402908542
  -"Kiribati",KI,2008,0.969189884926973
  -"Kiribati",KI,2007,0.912177316755468
  -"Kiribati",KI,2006,0.88241989725552
  -"Kiribati",KI,2005,0.91145264786206
  -"Kiribati",KI,2004,0.935055710912047
  -"Kiribati",KI,2003,0.944107430723976
  -"Kiribati",KI,2002,0.936912442565814
  -"Kiribati",KI,2001,0.906868195106099
  -"Kiribati",KI,2000,0.868222778415652
  -"Kiribati",KI,1999,0.869936432909565
  -"Kiribati",KI,1998,0.844557499314153
  -"Kiribati",KI,1997,0.796308894802094
  -"Kiribati",KI,1996,0.769241636935136
  -"Kiribati",KI,1995,0.712257168497464
  -"Kiribati",KI,1994,0.717623683720505
  -"Kiribati",KI,1993,0.68593792033151
  -"Kiribati",KI,1992,0.667235088821481
  -"Kiribati",KI,1991,0.646062343859383
  -"Kiribati",KI,1990,0.558417053851258
  -"Armenia",AM,2019,155.770479651178
  -"Armenia",AM,2018,156.506218798286
  +"Kiribati",KI,2010,0.963619596381515
  +"Kiribati",KI,2009,0.963492402932616
  +"Kiribati",KI,2008,0.969189884926464
  +"Kiribati",KI,2007,0.912177316745874
  +"Kiribati",KI,2006,0.88241989725554
  +"Kiribati",KI,2005,0.911452647903191
  +"Kiribati",KI,2004,0.935055710922544
  +"Kiribati",KI,2003,0.944107430715791
  +"Kiribati",KI,2002,0.936912442591201
  +"Kiribati",KI,2001,0.906868195056906
  +"Kiribati",KI,2000,0.868222778441706
  +"Kiribati",KI,1999,0.869936432889811
  +"Kiribati",KI,1998,0.844557499358794
  +"Kiribati",KI,1997,0.796308894783573
  +"Kiribati",KI,1996,0.769241636914579
  +"Kiribati",KI,1995,0.712257168474548
  +"Kiribati",KI,1994,0.717623683751827
  +"Kiribati",KI,1993,0.685937920375405
  +"Kiribati",KI,1992,0.667235088872726
  +"Kiribati",KI,1991,0.64606234381138
  +"Kiribati",KI,1990,0.558417053844063
  +"Armenia",AM,2020,157.090996811345
  +"Armenia",AM,2019,156.063789421831
  +"Armenia",AM,2018,156.559743384501
   "Armenia",AM,2017,155.970703125
   "Armenia",AM,2016,161.228881835938
   "Armenia",AM,2015,172.923522949219
  
positive.code: "Mauritius",MU,2013,16.5601921081543
  "Mauritius",MU,2012,16.4589385986328
  "Mauritius",MU,2011,15.8533592224121
  "Mauritius",MU,2010,15.6885333413167
  "Mauritius",MU,2009,15.6945575971095
  "Mauritius",MU,2008,15.9183429879371
  "Mauritius",MU,2007,15.3547956655531
  "Mauritius",MU,2006,14.557763417916
  "Mauritius",MU,2005,13.5067450884862
  "Mauritius",MU,2004,13.3984868001005
  "Mauritius",MU,2003,12.8776681827424
  "Mauritius",MU,2002,12.4185024294164
  "Mauritius",MU,2001,11.8763121052531
  "Mauritius",MU,2000,11.4248142864304
  "Mauritius",MU,1999,11.2950595422551
  "Mauritius",MU,1998,10.7515552181841
  "Mauritius",MU,1997,10.1647366520152
  "Mauritius",MU,1996,9.83632113935165
  "Mauritius",MU,1995,9.36096822386404
  "Mauritius",MU,1994,9.0673260265051
  "Mauritius",MU,1993,8.69120207968826
  "Mauritius",MU,1992,8.14603849840329
  "Mauritius",MU,1991,7.90816542484593
  "Mauritius",MU,1990,7.53065403589385
  "Portugal",PT,2019,0.547768
  "Portugal",PT,2018,0.5537
  "Portugal",PT,2017,0.573856
  "Portugal",PT,2016,0.571416
  "Portugal",PT,2015,0.584947
  "Portugal",PT,2014,0.578868
  
negative.code: "Romania",RO,1997,0.203271759418131
  "Romania",RO,1996,0.0878422344736194
  "Romania",RO,1995,0.0619466693533491
  "Romania",RO,1994,0.0439408464780205
  "Romania",RO,1993,0.0187760745690003
  "Romania",RO,1992,0.00587241655942882
  "Romania",RO,1991,0.00200302330193153
  "Romania",RO,1990,0.000701943297869591
  "United States",US,2020,1
  "United States",US,2019,1
  "United States",US,2018,1
  "United States",US,2017,1
  