2004	2003	2002	2001	2000
North America
Total oil wells	137	204	146	258	282
Total gas wells	444	378	223	241	256
Drilling success (%)	94	93	87	90	88

	2004	2003	2002	2001	2000
International
Total oil wells	57	51	55	131	96
Total gas wells	3	18	7	7	7
Drilling success (%)	77	90	77	83	87