Year,Maldives,Mauritania,Botswana
1980,nan,3.26322085196005,nan
1983,nan,1.96759749660643,nan
1986,nan,1.61751883178845,35.048063584123
1989,249.908769155244,1.76254153332735,47.9029595140657
1992,300.435321200106,1.80351225440544,51.6198289866927
1995,311.601618826496,2.03955984567469,45.9803883508339
1998,352.862229166997,2.13560880691198,43.6953042900019
2001,371.061169663657,2.20327102257183,43.8171029602876
2004,497.752580413925,2.85941011548947,49.7189712843745
2007,624.96059477651,3.58724707052243,59.330178931051
2010,3048.26848054296,3.67264447063942,57.66069662248
2013,784.250234422741,4.16281845361401,70.3852297124222
2016,934.632547019152,4.63182202403433,72.0594210847287
2019,1161.72598870733,5.31914814926853,80.2575037668311
2022,1219.93993905869,5.70218889553244,81.9138966486292