United States
The following table shows previous lists and the number of systems installed when the list was published. Country Efficiency in the table is SUM(Rmax)/SUM(Rpeak), expressed as a percentage.
| List | Systems | Highest Ranking | Sum Rmax (GFlops) |
Sum Rpeak (GFlops) |
Efficiency (%) |
|---|---|---|---|---|---|
| 06/2011 | 255 | 3 | 25265849.40 | 36064596.00 | 70.06 |
| 11/2010 | 275 | 2 | 22418773.60 | 31633935.70 | 70.87 |
| 06/2010 | 282 | 1 | 17969274.70 | 25929760.10 | 69.30 |
| 11/2009 | 277 | 1 | 16425369.70 | 24219465.30 | 67.82 |
| 06/2009 | 291 | 1 | 13720810.20 | 21014323.10 | 65.29 |
| 11/2008 | 291 | 1 | 11644464.50 | 17454031.00 | 66.72 |
| 06/2008 | 257 | 1 | 7472311.18 | 11005599.90 | 67.90 |
| 11/2007 | 284 | 1 | 4181665.60 | 6245005.00 | 66.96 |
| 06/2007 | 280 | 1 | 3075750.90 | 4435866.30 | 69.34 |
| 11/2006 | 309 | 1 | 2271152.47 | 3325500.46 | 68.30 |
| 06/2006 | 299 | 1 | 1779049.62 | 2652415.96 | 67.07 |
| 11/2005 | 305 | 1 | 1570031.79 | 2310400.22 | 67.95 |
| 06/2005 | 277 | 1 | 1045877.68 | 1584367.02 | 66.01 |
| 11/2004 | 266 | 1 | 687132.74 | 1119879.92 | 61.36 |
| 06/2004 | 258 | 2 | 458868.69 | 778171.74 | 58.97 |
| 11/2003 | 246 | 2 | 298168.73 | 530840.98 | 56.17 |
| 06/2003 | 247 | 2 | 200639.12 | 341457.10 | 58.76 |
| 11/2002 | 229 | 2 | 148623.62 | 242210.21 | 61.36 |
| 06/2002 | 226 | 2 | 99263.33 | 163412.93 | 60.74 |
| 11/2001 | 230 | 1 | 77848.11 | 120192.07 | 64.77 |
| 06/2001 | 253 | 1 | 64020.84 | 99956.48 | 64.05 |
| 11/2000 | 234 | 1 | 50567.18 | 81005.84 | 62.42 |
| 06/2000 | 259 | 1 | 36143.45 | 56978.16 | 63.43 |
| 11/1999 | 268 | 1 | 30148.46 | 47508.13 | 63.46 |
| 06/1999 | 293 | 1 | 23775.44 | 36807.21 | 64.59 |
| 11/1998 | 290 | 1 | 17785.59 | 28604.16 | 62.18 |
| 06/1998 | 285 | 1 | 12872.61 | 19202.38 | 67.04 |
| 11/1997 | 265 | 1 | 8782.13 | 13183.22 | 66.62 |
| 06/1997 | 265 | 1 | 6650.40 | 10080.28 | 65.97 |
| 11/1996 | 267 | 4 | 3505.90 | 5281.13 | 66.39 |
| 06/1996 | 257 | 3 | 2791.55 | 4221.25 | 66.13 |
| 11/1995 | 261 | 2 | 2581.51 | 3960.12 | 65.19 |
| 06/1995 | 274 | 2 | 2164.02 | 3425.04 | 63.18 |
| 11/1994 | 242 | 2 | 1341.15 | 2430.56 | 55.18 |
| 06/1994 | 246 | 1 | 1201.31 | 1997.01 | 60.16 |
| 11/1993 | 236 | 2 | 857.56 | 1474.99 | 58.14 |
| 06/1993 | 225 | 1 | 686.21 | 1161.88 | 59.06 |