Continent

Oil and gas geological structures in % of total deposit area

Total, %

Onshore, %

Offshore, %

Australia

1.1

0.5

1.6

Africa

4.0

1.4

5.4

South America

4.1

1.1

5.2

North America

19.8

3.3

23.1

Europe

20.7

7.9

28.6

Asia

31.4

4.6

36.0

Total

81.1

18.8

99.9