Table 4.

Statistics on matches to grant strings by article publication year

Article publication year	Matched grant strings	No of unique grants	No of unique articles	No of multi-inst articles	Percentage multi-institute articles	Match/article
1980	25 686	12 849	14 141	3090	21.9	1.82
1981	57 266	20 237	31 164	7281	23.4	1.84
1982	58 785	20 929	32 405	7253	22.4	1.81
1983	59 545	21 197	32 827	7388	22.5	1.81
1984	61 885	22 002	34 405	7823	22.7	1.80
1985	63 100	22 742	35 207	7938	22.6	1.79
1986	65 620	23 782	36 462	8481	23.3	1.80
1987	67 592	24 762	37 749	8670	23.0	1.79
1988	68 246	25 473	38 593	9035	23.4	1.77
1989	70 840	26 170	40 246	9317	23.2	1.76
1990	72 960	26 918	41 569	9433	22.7	1.76
1991	74 960	27 467	42 795	9667	22.6	1.75
1992	75 709	27 615	43 275	9847	22.8	1.75
1993	76 871	28 430	43 931	9821	22.4	1.75
1994	78 438	28 723	45 382	9738	21.5	1.73
1995	78 935	29 369	45 687	9629	21.1	1.73
1996	78 265	29 674	45 413	9644	21.2	1.72
1997	78 167	30 182	45 472	9689	21.3	1.72
1998	80 630	31 281	46 273	10 141	21.9	1.74
1999	82 233	32 227	47 314	10 693	22.6	1.74
2000	84 226	33 541	48 420	10 853	22.4	1.74
2001	94 575	35 961	49 765	12 239	24.6	1.90
2002	100 226	38 042	51 513	12 721	24.7	1.95
2003	105 231	40 037	54 251	13 531	24.9	1.94
2004	114 715	42 657	58 354	15 084	25.9	1.97
2005	123 247	45 309	62 368	16 455	26.4	1.98
2006	132 193	47 253	66 136	17 798	26.9	2.00
2007	140 738	50 102	70 089	18 791	26.8	2.01
2008	152 391	53 006	73 787	20 903	28.3	2.07
2009	149 301	52 521	71 417	20 378	28.5	2.09
UNIQUE	2 572 576	202 032	1 386 410	333 331	24.0	1.86