The Changing Game
Nationalizations in the 1970s and 1980s and tougher terms in the 1990s and 2000s mean Western oil giants face shrinking access to global oil and gas reserves
Note: National oil companies are state-owned or state-controlled companies
*2004 data
**Access to national oil company or Russian company reserves
†Equity access means possibility of ownership rights
Data: PFC Energy, Oil & Gas Journal, BP Statistical Review 2005