anchor.diff:  "Ghana",GH,1992,0.0135473245253049
   "Ghana",GH,1991,0.0124662990403328
   "Ghana",GH,1990,0.0107293003943367
  -"Greece",GR,2013,0.643324213
  -"Greece",GR,2012,0.684189755
  -"Greece",GR,2011,0.693179276
  -"Greece",GR,2010,0.701686521
  -"Greece",GR,2009,0.694859958
  -"Greece",GR,2008,0.701009999
  -"Greece",GR,2007,0.719244843
  -"Greece",GR,2006,0.698457834
  -"Greece",GR,2005,0.714036641
  -"Greece",GR,2004,0.69585823
  -"Greece",GR,2003,0.688560354
  -"Greece",GR,2002,0.659972072
  -"Greece",GR,2001,0.670304722
  -"Greece",GR,2000,0.677145083
  -"Greece",GR,1999,0.680628356
  -"Greece",GR,1998,0.661942764
  -"Greece",GR,1997,0.629960455
  -"Greece",GR,1996,0.605355813
  -"Greece",GR,1995,0.57433174
  -"Greece",GR,1994,0.534021723
  -"Greece",GR,1993,0.490538457
  -"Greece",GR,1992,0.438886442
  -"Greece",GR,1991,0.391027489
  -"Greece",GR,1990,0.337291258
  +"Greece",GR,2013,0.644565
  +"Greece",GR,2012,0.687573
  +"Greece",GR,2011,0.700169
  +"Greece",GR,2010,0.701765
  +"Greece",GR,2009,0.697474
  +"Greece",GR,2008,0.70101
  +"Greece",GR,2007,0.718599
  +"Greece",GR,2006,0.698791
  +"Greece",GR,2005,0.714037
  +"Greece",GR,2004,0.69528
  +"Greece",GR,2003,0.687742
  +"Greece",GR,2002,0.659972
  +"Greece",GR,2001,0.670555
  +"Greece",GR,2000,0.677606
  +"Greece",GR,1999,0.680628
  +"Greece",GR,1998,0.66237
  +"Greece",GR,1997,0.630242
  +"Greece",GR,1996,0.605066
  +"Greece",GR,1995,0.573221
  +"Greece",GR,1994,0.532987
  +"Greece",GR,1993,0.489585
  +"Greece",GR,1992,0.438031
  +"Greece",GR,1991,0.390262
  +"Greece",GR,1990,0.336639
   "Grenada",GD,2013,1.82943436931013
   "Grenada",GD,2012,1.82040085197335
   "Grenada",GD,2011,1.78312172068415
  
positive.code: "Philippines",PH,1992,7.97743129294012
  "Philippines",PH,1991,7.55969014267097
  "Philippines",PH,1990,6.70258987083332
  "Poland",PL,2013,1.823990709
  "Poland",PL,2012,1.85351158
  "Poland",PL,2011,1.823435381
  "Poland",PL,2010,1.819995772
  "Poland",PL,2009,1.857446806
  "Poland",PL,2008,1.856510023
  "Poland",PL,2007,1.844662055
  "Poland",PL,2006,1.842184913
  "Poland",PL,2005,1.869116126
  "Poland",PL,2004,1.862138166
  "Poland",PL,2003,1.840645462
  "Poland",PL,2002,1.829104344
  "Poland",PL,2001,1.859152672
  "Poland",PL,2000,1.838946027
  "Poland",PL,1999,1.740092003
  "Poland",PL,1998,1.657671667
  "Poland",PL,1997,1.517463382
  "Poland",PL,1996,1.358572021
  "Poland",PL,1995,1.178692971
  "Poland",PL,1994,0.940222148
  "Poland",PL,1993,0.699707984
  "Poland",PL,1992,0.548334547
  "Poland",PL,1991,0.404571339
  "Poland",PL,1990,0.269250745
  "Portugal",PT,2013,0.611698776
  "Portugal",PT,2012,0.617043936
  "Portugal",PT,2011,0.627576037
  "Portugal",PT,2010,0.631983672
  "Portugal",PT,2009,0.630853443
  "Portugal",PT,2008,0.649208599
  "Portugal",PT,2007,0.660402974
  "Portugal",PT,2006,0.66111729
  "Portugal",PT,2005,0.684330207
  "Portugal",PT,2004,0.716444053
  "Portugal",PT,2003,0.705849856
  "Portugal",PT,2002,0.708096481
  "Portugal",PT,2001,0.705020778
  "Portugal",PT,2000,0.698863698
  "Portugal",PT,1999,0.696703742
  "Portugal",PT,1998,0.692865622
  "Portugal",PT,1997,0.672080113
  "Portugal",PT,1996,0.660699954
  "Portugal",PT,1995,0.650084822
  "Portugal",PT,1994,0.641645954
  "Portugal",PT,1993,0.610849871
  "Portugal",PT,1992,0.582424684
  "Portugal",PT,1991,0.534524592
  "Portugal",PT,1990,0.501701086
  "Puerto Rico",PR,2013,0.820922202433127
  "Puerto Rico",PR,2012,0.811830516753133
  "Puerto Rico",PR,2011,0.7977296
  
negative.code: "Fiji",FJ,1992,0.786638465696118
  "Fiji",FJ,1991,0.757143479037741
  "Fiji",FJ,1990,0.73801509115127
  "Finland",FI,2013,0.931505
  "Finland",FI,2012,0.917778
  "Finland",FI,2011,0.90771
  "Finland",FI,2010,0.910916
  "Finland",FI,2009,0.903086
  "Finland",FI,2008,0.917629
  "Finland",FI,2007,0.940566
  "Finland",FI,2006,0.949414
  "Finland",FI,2005,0.977232
  "Finland",FI,2004,0.974898
  "Finland",FI,2003,1.009087
  "Finland",FI,2002,1.003258
  "Finland",FI,2001,1.011086
  "Finland",FI,2000,0.994396
  "Finland",FI,1999,1.002842
  "Finland",FI,1998,1.003444
  "Finland",FI,1997,0.997959
  "Finland",FI,1996,1.003925
  "Finland",FI,1995,0.99939
  "Finland",FI,1994,0.979145
  "Finland",FI,1993,0.981891
  "Finland",FI,1992,0.987441
  "Finland",FI,1991,1.000652
  "Finland",FI,1990,1.018091
  "France",FR,2013,0.854056
  "France",FR,2012,0.853388
  "France",FR,2011,0.844336
  "France",FR,2010,0.856867
  "France",FR,2009,0.860882
  "France",FR,2008,0.882239
  "France",FR,2007,0.892929
  "France",FR,2006,0.902207
  "France",FR,2005,0.923334
  "France",FR,2004,0.939618
  "France",FR,2003,0.936482
  "France",FR,2002,0.90497
  "France",FR,2001,0.918067
  "France",FR,2000,0.938608
  "France",FR,1999,0.959872
  "France",FR,1998,0.967575
  "France",FR,1997,0.974726
  "France",FR,1996,0.988709
  "France",FR,1995,0.993387
  "France",FR,1994,1.002611
  "France",FR,1993,1.014448
  "France",FR,1992,1.021828
  "France",FR,1991,1.024731
  "France",FR,1990,1.032315
  "Gabon",GA,2013,296.744088323165
  "Gabon",GA,2012,303.982577560522
  "Gabon",GA,2011,318.155714478371
  