Can you paraphrase this paragraph:
Adoption of a single-payer health-insurance program with universal coverage could also save money and improve care by allowing better coordination of care among different providers and by providing a continuity of care that is not possible with competing insurance plans. A comparison of health care in the United States with health care in other countries shows how large these cost savings might be. When Canada first adopted its current health-care financing system in 1968, the health-care share of the national gross domestic product in the United States (7.1%) was nearly the same as in Canada (6.9%), and only a little higher than in other advanced economies. Since then, however, health care has become dramatically more expensive in the United States. In the United States, per capita health-care spending since 1971 has risen by over $6,900 compared with an increase of less than $3,600 in Canada and barely $3,200 elsewhere (see Table 2). Physician Steffie Woolhandler and others have shown how much of this discrepancy between the experience of the United States and Canada can be associated with the lower administrative costs of Canada's single-payer system; she has found that administrative costs are nearly twice as high in the United States as in Canada-31% of costs versus 17%.