Russell Westbrook had the highest usage percentage in 2014-15, at 38.2 percent.

what are the top usage in 2015
Interpreted as:
What are the top usage with a minimum of 2000 minutes played per 82 team games by a player in 2015?
2014-15Westbrook2014-15Cousins2014-15James2014-15Harden2014-15Aldridge2014-15Curry2014-15Griffin2014-15DeRozan2014-15Ellis2014-15Davis2014-15Thompson2014-15Gay2014-15Williams2014-15Lillard2014-15Carter-Williams2014-15Lopez2014-15Irving2014-15Evans2014-15Hayward2014-15Vucevic2014-15Wall2014-15Walker2014-15Knight2014-15Lowry2014-15Teague38.234.032.231.130.228.928.328.327.927.727.727.026.926.926.626.326.126.126.126.126.025.925.925.425.2
NAMESEASONTMGPUSG%MPGPPGRPGAPGSPGBPGTPGFGMFGAFG%3PM3PA3P%FTMFTAFT%MINPTSREBASTSTLBLKTOVPF+/-
Russell WestbrookRussell Westbrook2014-15OKCOKC6738.234.428.17.38.62.10.24.49.422.042.61.34.329.98.19.883.52,3021,88648857414014293184247
DeMarcus CousinsDeMarcus Cousins2014-15SACSAC5934.034.124.112.73.61.51.74.38.418.146.70.00.125.07.29.278.22,0131,4217472109010325424162
LeBron JamesLeBron James2014-15CLECLE6932.236.125.36.07.41.60.73.99.018.548.81.74.935.45.47.771.02,4931,74341651110949272135539
James HardenJames Harden2014-15HOUHOU8131.136.827.45.77.01.90.74.08.018.144.02.66.937.58.810.286.82,9812,21745956515460321208335
LaMarcus AldridgeLaMarcus Aldridge2014-15PORPOR7130.235.423.410.21.70.71.01.79.319.946.60.51.535.24.35.184.52,5121,6617261244868122125338
Stephen CurryStephen Curry2014-15GSWGSW8028.932.723.84.37.72.00.23.18.216.848.73.68.144.33.94.291.42,6131,90034161916316249158920
Blake GriffinBlake Griffin2014-15LACLAC6728.335.221.97.65.30.90.52.38.617.150.20.10.440.04.66.472.82,3561,4695083546335152196586
DeMar DeRozanDeMar DeRozan2014-15TORTOR6028.335.020.14.63.51.20.22.36.816.541.30.41.528.46.07.283.22,1001,2042772107311137122131
Monta EllisMonta Ellis2014-15DALDAL8027.933.718.92.44.11.90.32.57.516.944.51.03.628.52.93.875.22,6991,51319032914825198197213
Anthony DavisAnthony Davis2014-15NOPNOP6827.736.124.410.22.21.52.91.49.417.653.50.00.28.35.56.880.52,4551,65669614910020095141267
Klay ThompsonKlay Thompson2014-15GSWGSW7727.731.921.73.22.91.10.81.97.816.946.33.17.143.92.93.387.92,4551,6682472228760149122776
Rudy GayRudy Gay2014-15SACSAC6827.035.421.15.93.71.00.62.77.516.445.51.23.235.95.05.885.82,4081,4323992507141183157-103
Lou WilliamsLou Williams2014-15TORTOR8026.925.215.51.92.11.10.11.34.711.640.41.95.634.04.34.986.12,0161,2421511648810101103295
Damian LillardDamian Lillard2014-15PORPOR8226.935.721.04.66.21.20.32.77.216.643.42.47.034.34.24.986.42,9251,7203785079721222164302
Michael Carter-WilliamsMichael Carter-Williams2014-15TOT6626.632.614.65.36.71.70.53.85.513.939.60.52.323.53.14.469.42,15096635344211130253167-165
Brook LopezBrook Lopez2014-15BKNBKN7226.329.217.27.40.70.61.81.47.013.751.30.00.110.03.13.881.42,1001,2365355043126104206-103
Kyrie IrvingKyrie Irving2014-15CLECLE7526.136.421.73.25.21.50.32.57.716.546.82.15.041.54.24.986.32,7301,62823738911420186146422
Tyreke EvansTyreke Evans2014-15NOPNOP7926.134.116.65.36.61.30.53.16.614.744.70.92.930.42.63.769.42,6901,31341652110037246198165
Gordon HaywardGordon Hayward2014-15UTAUTA7626.134.419.34.94.11.40.42.76.414.344.51.64.336.44.96.181.22,6181,46337331310830206131106
Nikola VucevicNikola Vucevic2014-15ORLORL7426.134.219.310.92.00.70.72.08.516.352.30.00.133.32.22.975.22,5291,4288101475454148220-301
John WallJohn Wall2014-15WASWAS7926.035.917.64.610.01.70.63.86.614.844.50.82.730.03.64.678.52,8371,38736679213845304180280
Kemba WalkerKemba Walker2014-15CHACHA6225.934.217.33.55.11.40.51.66.115.838.51.44.530.43.84.682.72,1191,075220318893110092-189
Brandon KnightBrandon Knight2014-15TOT6325.932.317.03.95.21.40.23.06.014.142.22.05.138.93.13.587.42,0351,0702443309010189114-79
Kyle LowryKyle Lowry2014-15TORTOR7025.434.517.84.76.81.60.22.56.114.941.21.95.633.83.64.580.82,4141,24432847310913173212204
Jeff TeagueJeff Teague2014-15ATLATL7325.230.515.92.57.01.70.42.85.612.246.01.02.834.33.84.486.22,2281,16218451312531205139389
StatMuse has season-level data for usage percentage going back to the 1977-78 season.

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