Company sector	Period	Total
Total no. companies in the directory	2001	11,709
Total no. companies in the directory	1999	4,877
Total no. companies in the directory	1997	4,370
Total no. companies in the directory	1995	4,267
Total no. companies in the directory	1993	3,003
Total no. companies in the directory	1992	2,659
Total no. companies in the directory	1991	3,029
Total no. companies in the directory	1990	2,986
Companies that answered. Perform systematic R+D. Total	2001	2,790
Companies that answered. Perform systematic R+D. Total	1999	2,267
Companies that answered. Perform systematic R+D. Total	1997	1,872
Companies that answered. Perform systematic R+D. Total	1995	1,804
Companies that answered. Perform systematic R+D. Total	1993	1,874
Companies that answered. Perform systematic R+D. Total	1992	1,753
Companies that answered. Perform systematic R+D. Total	1991	1,779
Companies that answered. Perform systematic R+D. Total	1990	1,630
Companies that answered. Perform systematic R+D. %	2001	24
Companies that answered. Perform systematic R+D. %	1999	46
Companies that answered. Perform systematic R+D. %	1997	43
Companies that answered. Perform systematic R+D. %	1995	42
Companies that answered. Perform systematic R+D. %	1993	62
Companies that answered. Perform systematic R+D. %	1992	66
Companies that answered. Perform systematic R+D. %	1991	59
Companies that answered. Perform systematic R+D. %	1990	55
Companies that answered. Do not perform R+D. Total	2001	7,239
Companies that answered. Do not perform R+D. Total	1999	2,155
Companies that answered. Do not perform R+D. Total	1997	1,713
Companies that answered. Do not perform R+D. Total	1995	1,642
Companies that answered. Do not perform R+D. Total	1993	780
Companies that answered. Do not perform R+D. Total	1992	473
Companies that answered. Do not perform R+D. Total	1991	451
Companies that answered. Do not perform R+D. Total	1990	392
Companies that answered. Do not perform R+D. %	2001	62
Companies that answered. Do not perform R+D. %	1999	44
Companies that answered. Do not perform R+D. %	1997	39
Companies that answered. Do not perform R+D. %	1995	39
Companies that answered. Do not perform R+D. %	1993	26
Companies that answered. Do not perform R+D. %	1992	18
Companies that answered. Do not perform R+D. %	1991	15
Companies that answered. Do not perform R+D. %	1990	13
Companies that did not answer. Total	2001	452
Companies that did not answer. Total	1999	198
Companies that did not answer. Total	1997	194
Companies that did not answer. Total	1995	259
Companies that did not answer. Total	1993	227
Companies that did not answer. Total	1992	217
Companies that did not answer. Total	1991	304
Companies that did not answer. Total	1990	458
Companies that did not answer. %	2001	4
Companies that did not answer. %	1999	4
Companies that did not answer. %	1997	4
Companies that did not answer. %	1995	6
Companies that did not answer. %	1993	8
Companies that did not answer. %	1992	8
Companies that did not answer. %	1991	10
Companies that did not answer. %	1990	15
Other events. Total	2001	1,228
Other events. Total	1999	257
Other events. Total	1997	591
Other events. Total	1995	562
Other events. Total	1993	122
Other events. Total	1992	216
Other events. Total	1991	495
Other events. Total	1990	506
Other events. %	2001	10
Other events. %	1999	5
Other events. %	1997	14
Other events. %	1995	13
Other events. %	1993	4
Other events. %	1992	8
Other events. %	1991	16
Other events. %	1990	17