14
Table 3
Supply and Demand in ARL Libraries, 1986‐2006
Median Values for Time‐Series Trends21
Year ILL:
Borrowed
ILL:
Lended
Graduate
Students
Teaching
Faculty
Total
Students
Serials
Purchased
Serials
Received
Monographs
Purchased
(Libraries) (103) (103) (104) (101) (103) (36) (36) (58)
1986 7,047 16,092 2,327 1,124 16,684 15,775 3,318 32,679
1987 7,387 16,318 3,078 1,195 17,029 16,514 3,477 26,240
1988 7,881 17,476 3,251 1,222 17,485 15,948 3,367 25,238
1989 8,547 19,638 3,312 1,285 17,866 15,983 3,345 27,082
1990 9,595 20,837 3,314 1,278 17,745 16,128 4,304 27,546
1991 10,397 23,285 3,310 1,295 18,290 15,962 4,500 27,843
1992 11,362 22,514 3,539 1,356 18,273 15,673 5,100 26,947
1993 12,489 22,740 3,745 1,281 18,450 15,441 5,082 25,188
1994 14,007 24,039 3,794 1,289 18,305 15,099 5,518 25,341
1995 14,472 24,864 3,914 1,308 18,209 14,320 6,107 25,707
1996 15,278 25,720 3,904 1,251 18,320 14,723 5,983 25,911
1997 16,264 25,463 3,942 1,263 18,166 14,820 5,757 28,576
1998 17,656 27,223 3,880 1,247 18,335 14,063 7,111 24,447
1999 18,942 26,837 3,933 1,255 18,609 14,192 6,546 25,173
2000 20,475 27,044 3,844 1,239 18,908 14,541 7,944 28,024
2001 21,902 28,950 4,159 1,279 19,102 13,682 7,915 30,494
2002 21,339 29,021 4,067 1,251 19,925 17,594 8,769 31,578
2003 22,146 33,421 4,167 1,268 21,132 18,115 8,871 33,208
2004 25,737 33,934 4,461 1,369 21,562 22,311 9,991 30,155
2005 25,729 36,325 4,595 1,355 22,047 22,404 11,203 30,546
2006 27,412 36,035 4,647 1,388 22,618 23,849 11,980 33,145
Avg annual
%change
7.0% 4.1% 3.5% 1.1% 1.5% 2.1% 6.6% 0.1%
Table 3 and Graph 3 show that the number of non‐purchased serials received by the average
ARL library increased by an annual average of 6.6% since 1986. This category consists of a number of
types of serials, including government documents, electronic serials made available free of charge
with the purchase of print counterparts, and open access journals. Interlibrary borrowing and lending,
which showed a marked growth in the last decade, seem to be stabilizing.
In 2005‐06 the median subscriptions reached a new high in the history of the time series, and
monographs purchase rose above 1986 levels for the second time in the last nineteen years.
21 Time series for Monographs Purchased were revised due to unavailable data.
Previous Page Next Page