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The following table shows previous lists and the number of systems installed when the list was published. Site Efficiency in the table is SUM(Rmax)/SUM(Rpeak), expressed as a percentage.

List Systems Highest Ranking Sum Rmax
(GFlops)		 Sum Rpeak
(GFlops)		 Site Efficiency
(%)
06/2011 2 70 231800.00 312832.00 74.10
11/2010 2 57 231800.00 312832.00 74.10
06/2010 2 39 231800.00 312832.00 74.10
11/2009 2 33 231800.00 312832.00 74.10
06/2009 2 25 231800.00 312832.00 74.10
11/2008 3 22 125384.00 194112.00 64.59
06/2008 3 19 112724.00 194112.00 58.07
11/2007 2 67 32404.00 37696.00 85.96
06/2007 2 48 32404.00 37696.00 85.96
11/2006 3 38 37221.00 50586.00 73.58
06/2006 2 42 18482.00 33076.00 55.88
11/2005 2 33 18482.00 33076.00 55.88
06/2005 2 24 18482.00 33076.00 55.88
11/2004 2 11 18482.00 33076.00 55.88
06/2004 4 6 15297.00 27993.40 54.65
11/2003 2 23 5120.00 9984.00 51.28
06/2003 2 15 5120.00 9984.00 51.28
11/2002 4 13 6219.00 11199.20 55.53
06/2002 2 29 1099.00 1215.20 90.44
11/2001 3 21 1196.50 1330.40 89.94
06/2001 3 16 1196.50 1330.40 89.94
11/2000 3 12 1196.50 1330.40 89.94
06/2000 3 38 655.50 735.20 89.16
11/1999 2 50 310.50 370.40 83.83
06/1999 2 40 310.50 370.40 83.83
11/1998 3 27 329.70 390.20 84.50
06/1998 2 19 232.20 275.00 84.44
11/1997 2 8 232.20 275.00 84.44
06/1997 5 21 148.60 164.24 90.48
11/1996 3 10 120.80 135.64 89.06
06/1996 2 86 26.50 34.44 76.95
11/1995 2 64 26.50 34.44 76.95
06/1995 2 52 26.50 34.44 76.95
11/1994 2 30 26.50 34.44 76.95
06/1994 1 30 13.70 15.24 89.91
11/1993 1 17 13.70 15.24 89.91
06/1993 1 12 13.70 15.24 89.91