Number of microbiology articles multiplied by the impact factor of the corresponding journal.

	1995	1996	1997	1998	1999	2000	2001	2002	Total
Western Europe	7,785	9,744	9,292	10,434	11,819	13,201	14,052	13,716	90,042
USA	8,297	10,061	8,331	8,792	9,680	10,748	11,142	11,286	78,337
Japan	1,346	1.348	1,716	1,710	1,794	2,153	2,138	2,268	14,472
Asia (excl. Japan)	566	752	822	924	1,081	1,209	1,589	1,740	8,683
Canada	893	985	882	982	1,019	1,067	1,098	1.268	8,195
Oceania	600	568	636	644	635	815	839	926	5,665
Latin America	330	327	432	553	520	613	808	922	4,504
Eastern Europe	234	264	305	377	386	482	687	705	3,439
Africa	135	126	131	211	238	266	359	270	1,737
Total	20,187	24,175	22,548	24,627	27,171	30,555	32,711	33,102	215,075