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Since 1972, North America has experienced greater
regional integration, increased economic activity and a gradual shift
towards the service sector. Some North American companies have become
truly transnational and have invested heavily in emerging economies, significantly
influencing development patterns elsewhere. Despite periodic setbacks
over the past 30 years, North America has strengthened its role as an
engine of global economic change (Blank 2001). Concerns about the vulnerability
of the energy sector largely vanished as the 1973 and 1979 oil crises
were followed by economic restructuring and the growth of the service
sector (see graph). With the conclusion of a free trade agreement and
the emergence of information and biotechnologies, many regional North
American economies soared through most of the 1990s and then collapsed
in 2000, shaking the stock markets.
In 2001, it was estimated that the 285 million people (including 135
million workers) of the United States produced about US$10 000 billion
in GDP; the 31 million people (including 15 million workers) of Canada
about US$670 billion in GDP (US Department of Commerce 2002, US Census
Bureau 2002, US Department of Labor 2002, Statistics Canada 2002).
North America not only leads the world in economic output but also consumes
the most. Private consumption per capita in the region is about five times
the global average, and grew from US$11 461 in 1972 to US$18 167 in 1997,
compared to a global average of US$2 315 in 1972 and US$3 257 in 1997
(World Bank 2001, all figures expressed in constant US$1995).
Although representing only around 5 per cent of the global population,
the United States and Canada consume nearly 25 per cent of total energy
(IEA 2002). While there is evidence of a slight decoupling of energy use
and economic growth, per capita energy use has remained consistently higher
than in any other of the world's regions (Mathews and Hammond 1999). Use
of private vehicles continues to increase, whereas use of public transportation
has generally remained constant (see 'Urban areas').
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