18
TABLE 5
Resources per Student in ARL University Libraries, 1986‐2006
Median of Ratio Values for Time‐Series Trends23
Year ILL:
Borrowed
Volumes
Held
Volumes
Added
(Gross)
Total
Staff
Serials
Purchased
Monographs
Purchased
(Libraries) (102) (103) (103) (103) (36) (57)
1986 0.42 123.18 4.17 0.0159 0.85 2.20
1987 0.44 125.31 3.92 0.0164 0.84 1.88
1988 0.44 128.27 3.82 0.0161 0.85 1.66
1989 0.50 130.04 3.84 0.0162 0.86 1.77
1990 0.55 133.51 3.86 0.0155 0.86 1.83
1991 0.63 137.11 4.04 0.0154 0.85 1.86
1992 0.62 137.68 3.95 0.0153 0.84 1.58
1993 0.68 146.02 3.76 0.0152 0.80 1.49
1994 0.74 151.20 4.07 0.0152 0.79 1.55
1995 0.80 154.00 4.37 0.0147 0.83 1.59
1996 0.89 158.10 3.78 0.0145 0.80 1.48
1997 0.89 159.40 4.03 0.0142 0.77 1.52
1998 0.97 159.24 4.06 0.0143 0.73 1.44
1999 1.05 159.37 4.00 0.0142 0.77 1.42
2000 1.13 157.74 3.82 0.0139 0.77 1.63
2001 1.16 155.71 3.89 0.0136 0.79 1.69
2002 1.14 155.04 3.87 0.0131 0.82 1.54
2003 1.14 156.41 3.52 0.0125 0.85 1.47
2004 1.20 151.49 3.45 0.0120 0.98 1.53
2005 1.22 157.93 3.30 0.0118 1.10 1.42
2006 1.22 160.05 3.26 0.0117 1.08 1.64
Avg annual
%change
5.4% 1.3% -1.2% -1.5% 1.2% -1.4%
Table 5 and Graph 5 show that per‐student borrowing activity through interlibrary loan has
continued to increase, and libraries are borrowing three times more items on a per‐student basis than
they did 20 years ago.24 Additionally, over the 20‐year period since 1986, ARL libraries are acquiring
25% fewer monographs per student, but 27% more serials. Libraries also reported fewer staff per student
in 2006 as compared to 1986: in 2006, there was a median number of 11.7 total staff per 1,000 students,
compared to the 1986 figure of 16 per 1,000.
23 All time‐series in this table have been revised due to unavailable data.
24 This overall trend should not be interpreted rigidly, as it negates the varying experiences of individual libraries.
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