| Institution |
2001
|
2002
|
2003
|
2004
|
2005
|
| Princeton
University |
7.64
|
4.96
|
5.35
|
6.68
|
9.54
|
| Johns
Hopkins University |
1.86
|
3.3
|
3.61
|
4.98
|
7.30
|
| Yale
University |
6.39
|
6.37
|
5.47
|
5.97
|
6.82
|
| Harvard
University |
5.98
|
5.66
|
5.47
|
5.27
|
5.20
|
| Brown
University |
2.26
|
2.73
|
2.86
|
2.42
|
4.29
|
| Washington
University |
1.8
|
1.84
|
4.36
|
4.52
|
4.21
|
| Cornell
University |
3.31
|
3.2
|
3.16
|
3.71
|
4.14
|
| Columbia
University |
2.83
|
3.25
|
3.22
|
3.2
|
4.01
|
| Case
Western Reserve University |
2.49
|
2.58
|
2.81
|
2.92
|
3.83
|
| University
of Chicago |
3.84
|
3.89
|
3.8
|
3.49
|
3.81
|
| University
of Rochester |
2.88
|
5
|
3.32
|
3.13
|
3.67
|
| Rice
University |
6.35
|
7.6
|
7.96
|
3.38
|
3.54
|
| Emory
University |
2.69
|
3.7
|
3.52
|
4.99
|
3.27
|
| University
of California-Berkeley |
2.86
|
2.91
|
2.76
|
2.7
|
3.17
|
| Vanderbilt
University |
2.68
|
2.97
|
2.74
|
2.67
|
3.14
|
| Northwestern |
2.78
|
2.8
|
2.79
|
3.15
|
2.85
|
| University
of Virginia |
2.97
|
3.07
|
2.86
|
2.77
|
2.77
|
| Duke
University |
3.16
|
3.19
|
3.15
|
2.84
|
2.66
|
| North
Carolina State University |
2.27
|
2.41
|
2.3
|
2.43
|
2.53
|
| SUNY-Stony
Brook |
1.52
|
1.83
|
1.17
|
1.7
|
2.45
|
| University
of North Carolina-Chapel Hill |
2.26
|
2.3
|
2.33
|
2.39
|
2.41
|
| University
of Nebraska-Lincoln |
1.23
|
1.22
|
1.62
|
1.68
|
2.39
|
| University
of Illinois-Urbana |
2.68
|
2.61
|
2.48
|
2.43
|
2.36
|
| Massachusetts
Institute of Technology |
2.25
|
2.28
|
2.28
|
2.23
|
2.31
|
| University
of Pennsylvania |
2.54
|
2.26
|
2.06
|
2.21
|
2.28
|
| University
of Kansas |
1.46
|
1.5
|
1.6
|
1.86
|
2.23
|
| University
of Iowa |
2.09
|
2.17
|
2.11
|
2.13
|
2.21
|
| University
of California-Los Angeles |
2.57
|
2.22
|
2.2
|
2.11
|
2.16
|
| Indiana
University |
1.8
|
1.83
|
1.76
|
2.13
|
2.11
|
| Georgia
Tech |
1.46
|
1.53
|
1.56
|
1.74
|
2.05
|
| McGill
University |
0.78
|
1
|
1.04
|
0.74
|
2.00
|
| University
of California-Santa Barbara |
0.93
|
1.13
|
1.01
|
1.9
|
1.98
|
| University
of Florida |
0.83
|
0.7
|
0.62
|
0.6
|
1.83
|
| Univ.
of New York |
1.47
|
1.27
|
1.57
|
1.71
|
1.81
|
| University
of Wisconsin-Madison |
1.47
|
1.32
|
1.61
|
1.5
|
1.79
|
| University
of Washington |
1.86
|
1.43
|
1.5
|
1.47
|
1.70
|
| University
of Georgia |
1.74
|
1.71
|
1.78
|
2.32
|
1.68
|
| Tulane
University |
1.53
|
1.59
|
1.6
|
1.66
|
1.66
|
| University
of Missouri-Columbia |
0.81
|
0.78
|
1.23
|
0.92
|
1.66
|
| University
of Pittsburgh |
1.21
|
1.29
|
1.69
|
1.63
|
1.57
|
| SUNY-Buffalo |
1.55
|
1.56
|
1.55
|
1.54
|
1.55
|
| University
of California-Davis |
1.92
|
1.89
|
1.86
|
1.34
|
1.51
|
| Texas
A&M |
0.97
|
1.06
|
1.14
|
1.25
|
1.44
|
| University
of California-San Diego |
1.5
|
1.43
|
1.41
|
1.37
|
1.39
|
| Virginia
Tech |
0.72
|
0.67
|
1.15
|
1.21
|
1.37
|
| Rutgers-State
University of NJ |
0.94
|
0.96
|
0.96
|
1.07
|
1.30
|
| Iowa
State University |
0.85
|
1.24
|
1.17
|
1.43
|
1.29
|
| University
of Minnesota |
1.35
|
1.19
|
1.09
|
1.02
|
1.21
|
| University
of Toronto |
1.32
|
1.29
|
1.25
|
1.14
|
1.18
|
| University
of Southern California |
1.17
|
1.16
|
1.15
|
0.63
|
1.16
|
| University
of California-Irvine |
1.35
|
1.37
|
1.26
|
1.11
|
1.15
|
| University
of Arizona |
1.16
|
1.15
|
1.19
|
1.2
|
1.10
|
| University
of Oregon |
1.13
|
1.12
|
1.06
|
0.95
|
1.10
|
| University
of Colorado |
1.12
|
1.06
|
0.98
|
0.81
|
1.08
|
| Pennsylvania
State University |
0.81
|
0.91
|
0.73
|
0.92
|
1.07
|
| University
of Texas at Austin |
1.13
|
1.11
|
1.07
|
1.04
|
1.03
|
| University
of Maryland-College Park |
1.2
|
1.22
|
0.96
|
0.96
|
0.95
|
| Michigan
State University |
0.84
|
0.8
|
0.89
|
0.99
|
0.94
|
| Ohio
State University |
1.14
|
1.07
|
1.03
|
0.81
|
0.79
|
| Purdue
University |
0.58
|
0.6
|
0.57
|
0.6
|
0.62
|
| Syracuse
University |
1.23
|
1.31
|
1.25
|
1.35
|
N/A
|
| University
of Michigan |
2.01
|
1.98
|
2.1
|
1.88
|
N/A
|
