what is the sum of the gdp (usd ppp bin, 2012) between niger and sierra?
21.91
col : country | gdp (usd bln, 2012) | gdp (usd bln, 2017) | gdp (usd ppp bln, 2012) | gdp (usd ppp bln, 2017) | per capita (usd, 2012) | per capita (usd, 2017) | per capita (usd ppp, 2012) | per capita (usd ppp, 2017) row 1 : albania | 12.39 | 14.75 | 25.86 | 31.55 | 3,821.09 | 4,435.73 | 7,975.86 | 9,489.11 row 2 : algeria | 206.55 | 242.31 | 274.50 | 356.26 | 5,659.74 | 6,163.52 | 7,521.74 | 9,061.86 row 3 : bangladesh | 118.69 | 177.66 | 305.51 | 462.42 | 791.09 | 1,122.90 | 2,036.23 | 2,922.78 row 4 : burkina faso | 10.27 | 15.28 | 24.03 | 36.52 | 591.83 | 785.64 | 1,384.18 | 1,877.68 row 5 : chad | 9.72 | 10.96 | 21.34 | 27.02 | 905.32 | 899.03 | 1,986.44 | 2,217.06 row 6 : côte d'ivoire | 24.27 | 37.03 | 39.64 | 61.66 | 1,038.74 | 1,366.89 | 1,696.15 | 2,276.02 row 7 : egypt | 255.00 | 339.33 | 537.76 | 756.42 | 3,109.47 | 3,729.36 | 6,557.38 | 8,313.47 row 8 : gabon | 16.80 | 18.00 | 26.71 | 32.68 | 10,908.38 | 10,881.51 | 17,338.98 | 19,762.74 row 9 : iran | 483.78 | 671.01 | 1,006.54 | 1,173.48 | 6,355.74 | 8,269.55 | 13,103.90 | 14,462.05 row 10 : iraq | 130.57 | 214.36 | 155.38 | 283.34 | 3,882.08 | 5,744.21 | 4,619.68 | 7,592.46 row 11 : jordan | 31.35 | 46.33 | 38.67 | 51.61 | 4,901.28 | 6,464.77 | 6,044.40 | 7,201.71 row 12 : kazakhstan | 200.64 | 339.57 | 232.35 | 339.77 | 12,021.22 | 20,243.27 | 13,920.87 | 20,255.29 row 13 : kuwait | 174.63 | 193.10 | 165.94 | 212.73 | 46,142.29 | 44,467.96 | 43,846.72 | 48,990.11 row 14 : lebanon | 41.77 | 56.25 | 63.69 | 82.99 | 10,416.17 | 13,149.68 | 15,884.07 | 19,401.42 row 15 : maldives | 1.98 | 2.69 | 2.89 | 3.67 | 5,976.79 | 7,473.76 | 8,730.17 | 10,217.39 row 16 : mali | 9.60 | 13.39 | 17.35 | 24.27 | 587.49 | 702.87 | 1,061.75 | 1,273.87 row 17 : mauritania | 4.10 | 5.64 | 7.62 | 10.97 | 1,128.91 | 1,380.28 | 2,098.81 | 2,686.63 row 18 : morocco | 97.17 | 140.01 | 170.95 | 242.78 | 2,987.92 | 4,099.70 | 5,256.55 | 7,109.34 row 19 : mozambique | 14.64 | 23.76 | 26.22 | 41.71 | 652.00 | 958.25 | 1,167.30 | 1,682.38 row 20 : niger | 6.56 | 9.65 | 13.53 | 20.29 | 421.56 | 532.81 | 869.94 | 1,120.09 row 21 : nigeria | 272.55 | 388.42 | 450.54 | 676.25 | 1,654.31 | 2,058.57 | 2,734.63 | 3,584.02
what is the sum of the gdp (usd ppp bin, 2012) between niger and sierra?
Country GDP (USD bln, 2012) GDP (USD bln, 2017) GDP (USD PPP bln, 2012) GDP (USD PPP bln, 2017) Per capita (USD, 2012) Per capita (USD, 2017) Per capita (USD PPP, 2012) Per capita (USD PPP, 2017)
Afghanistan 19.85 28.45 31.80 45.30 619.89 766.43 993.23 1,220.52
Albania 12.39 14.75 25.86 31.55 3,821.09 4,435.73 7,975.86 9,489.11
Algeria 206.55 242.31 274.50 356.26 5,659.74 6,163.52 7,521.74 9,061.86
Azerbaijan 71.04 109.95 98.24 123.35 7,726.65 11,491.29 10,684.95 12,891.89
Bahrain 26.51 30.36 32.44 40.37 23,027.12 23,889.03 28,182.13 31,765.11
Bangladesh 118.69 177.66 305.51 462.42 791.09 1,122.90 2,036.23 2,922.78
Benin 7.54 11.14 15.51 20.74 806.38 1,048.35 1,658.02 1,952.09
Brunei Darussalam 16.85 18.15 21.94 28.31 38,801.27 37,516.64 50,526.35 58,522.83
Burkina Faso 10.27 15.28 24.03 36.52 591.83 785.64 1,384.18 1,877.68
Cameroon 24.51 34.16 50.32 70.79 1,142.25 1,407.23 2,345.29 2,915.94
Chad 9.72 10.96 21.34 27.02 905.32 899.03 1,986.44 2,217.06
Comoros 0.60 0.83 0.87 1.15 857.75 1,079.12 1,255.98 1,488.46
Côte d'Ivoire 24.27 37.03 39.64 61.66 1,038.74 1,366.89 1,696.15 2,276.02
Djibouti 1.36 2.00 2.38 3.36 1,570.59 2,039.31 2,745.19 3,431.50
Egypt 255.00 339.33 537.76 756.42 3,109.47 3,729.36 6,557.38 8,313.47
Gabon 16.80 18.00 26.71 32.68 10,908.38 10,881.51 17,338.98 19,762.74
The Gambia 0.94 1.39 3.50 5.38 508.68 657.09 1,891.76 2,548.81
Guinea 5.74 10.66 12.25 24.14 529.20 868.20 1,128.63 1,965.65
Guinea-Bissau 0.88 1.29 1.90 2.79 514.14 671.22 1,105.55 1,453.15
Guyana 2.79 3.98 6.16 8.49 3,596.44 5,053.25 7,950.28 10,788.87
Indonesia 894.85 1,842.78 1,211.96 1,814.58 3,660.42 7,022.67 4,957.55 6,915.24
Iran 483.78 671.01 1,006.54 1,173.48 6,355.74 8,269.55 13,103.90 14,462.05
Iraq 130.57 214.36 155.38 283.34 3,882.08 5,744.21 4,619.68 7,592.46
Jordan 31.35 46.33 38.67 51.61 4,901.28 6,464.77 6,044.40 7,201.71
Kazakhstan 200.64 339.57 232.35 339.77 12,021.22 20,243.27 13,920.87 20,255.29
Kuwait 174.63 193.10 165.94 212.73 46,142.29 44,467.96 43,846.72 48,990.11
Kyrgyz Republic 6.20 9.58 13.47 19.45 1,109.09 1,632.03 2,411.04 3,311.42
Lebanon 41.77 56.25 63.69 82.99 10,416.17 13,149.68 15,884.07 19,401.42
Libya 85.11 117.76 87.91 145.08 12,878.85 16,141.08 13,303.20 19,886.33
Malaysia 307.18 465.14 491.97 680.30 10,578.45 14,723.61 16,942.14 21,534.22
Maldives 1.98 2.69 2.89 3.67 5,976.79 7,473.76 8,730.17 10,217.39
Mali 9.60 13.39 17.35 24.27 587.49 702.87 1,061.75 1,273.87
Mauritania 4.10 5.64 7.62 10.97 1,128.91 1,380.28 2,098.81 2,686.63
Morocco 97.17 140.01 170.95 242.78 2,987.92 4,099.70 5,256.55 7,109.34
Mozambique 14.64 23.76 26.22 41.71 652.00 958.25 1,167.30 1,682.38
Niger 6.56 9.65 13.53 20.29 421.56 532.81 869.94 1,120.09
Nigeria 272.55 388.42 450.54 676.25 1,654.31 2,058.57 2,734.63 3,584.02
Oman 79.97 89.97 90.66 117.23 25,151.54 24,323.53 28,511.86 31,693.79
Pakistan 230.53 274.82 514.56 662.44 1,288.50 1,391.71 2,876.08 3,354.68
Qatar 184.57 237.85 188.96 274.46 100,377.54 106,320.28 102,768.69 122,684.13
Saudi Arabia 657.05 778.75 740.53 985.79 22,822.82 24,428.39 25,722.42 30,922.92
Senegal 13.95 19.55 26.50 37.10 1,013.34 1,261.40 1,925.30 2,393.44
Sierra Leone 3.82 5.71 8.38 12.78 621.22 816.31 1,360.58 1,825.47
Sudan 51.58 57.89 80.43 102.35 1,539.31 1,519.50 2,400.17 2,686.33
Suriname 5.09 8.06 6.69 9.19 9,338.99 13,821.78 12,255.19 15,755.24
Syria n/a n/a n/a n/a n/a n/a n/a n/a
Tajikistan 7.26 10.91 17.61 25.60 911.98 1,235.12 2,210.56 2,897.11
Togo 3.62 4.67 6.90 9.75 574.95 664.32 1,094.46 1,385.73
Tunisia 44.70 54.84 104.41 143.65 4,151.92 4,835.23 9,698.13 12,665.06
Turkey 783.06 1,170.08 1,125.42 1,497.09 10,456.89 14,748.21 15,028.63 18,870.00
Turkmenistan 33.47 83.42 47.55 75.38 5,960.67 13,724.21 8,469.10 12,401.85
Uganda 20.46 29.89 50.59 75.86 574.07 712.81 1,419.17 1,809.06
United Arab Emirates 361.91 430.53 271.21 345.14 65,377.09 67,348.58 48,992.47 53,990.11
Uzbekistan 51.62 79.73 103.91 151.81 1,752.90 2,550.49 3,528.60 4,856.52
Yemen 36.37 53.00 57.76 78.18 1,405.13 1,768.01 2,231.69 2,608.10
21.91