We examine the income before taxes and charges for each region from 1998 to 2000:
- Spain: 31 (1998), 341 (1999), 760 (2000), showing a sustained increase.
- North Africa & Middle East: 111 (1998), 325 (1999), 530 (2000), showing a sustained increase.
- Argentina: 94 (1998), 838 (1999), 2999 (2000), showing a sustained increase.
- Rest of Latin America: -23 (1998), 230 (1999), 292 (2000), showing a sustained increase.
- Far East: 19 (1998), 97 (1999), 75 (2000), showing a sustained increase.
- North Sea: 26 (1998), 75 (1999), 33 (2000), showing a sustained increase.
- Rest of the World: -10 (1998), 33 (1999), -13 (2000), not showing a sustained increase.
Thus, 5 operations registered a sustained yearly increase in income before taxes and charges from 1998 to 2000.