anchor.diff:  "Bangladesh",BD,1998,15.1655045256661
   "Bangladesh",BD,1997,14.6368564690125
   "Bangladesh",BD,1996,14.3423251425669
  -"Bangladesh",BD,1995,12.2576448712942
  -"Bangladesh",BD,1994,11.6788528314148
  -"Bangladesh",BD,1993,11.4723751235297
  -"Bangladesh",BD,1992,11.7270951618283
  -"Bangladesh",BD,1991,11.6925009239526
  -"Bangladesh",BD,1990,11.7606759339138
  -"Barbados",BB,2014,1.91387078374338
  -"Barbados",BB,2013,1.91246163411575
  -"Barbados",BB,2012,1.95546679094914
  +"Bangladesh",BD,1995,12.2576448711221
  +"Bangladesh",BD,1994,11.6788528313506
  +"Bangladesh",BD,1993,11.472375123719
  +"Bangladesh",BD,1992,11.7270951620492
  +"Bangladesh",BD,1991,11.6925009240785
  +"Bangladesh",BD,1990,11.7606759340207
  +"Barbados",BB,2015,1.91090335853959
  +"Barbados",BB,2014,1.90690341782015
  +"Barbados",BB,2013,1.90894825166337
  +"Barbados",BB,2012,1.9545676801374
   "Barbados",BB,2011,2.01679631525566
   "Barbados",BB,2010,2.11506378662134
   "Barbados",BB,2009,2.22233646711254
  
positive.code: "Kyrgyz Republic",KG,1992,0.0896358386479267
  "Kyrgyz Republic",KG,1991,0.00985628017440934
  "Kyrgyz Republic",KG,1990,0.00433838908707241
  "Lao PDR",LA,2014,2649.36733058371
  "Lao PDR",LA,2013,2696.21229732642
  "Lao PDR",LA,2012,2528.62496438648
  "Lao PDR",LA,2011,2467.75264098598
  "Lao PDR",LA,2010,2426.41661983551
  "Lao PDR",LA,2009,2232.39964258407
  
negative.code: "Micronesia, Fed. Sts.",FM,1992,0.876720850557509
  "Micronesia, Fed. Sts.",FM,1991,0.870330209923579
  "Micronesia, Fed. Sts.",FM,1990,0.855649411939674
  "Moldova",MD,2015,6.80442946246534
  "Moldova",MD,2014,6.28822718872626
  "Moldova",MD,2013,6.00845664058557
  "Moldova",MD,2012,5.86389045358107
  "Moldova",MD,2011,5.5349509828566
  "Moldova",MD,2010,5.24775572255707
  "Moldova",MD,2009,4.78212806389
  