WASHINGTON — Driven by rising prices for drugs and medical services, the nation’s health care tab will continue to outpace economic growth over the next decade, according to a new government report.

And by 2026, health care spending will account for almost one-fifth of the U.S. economy, an all-time record.

The new report, which was prepared by independent economists at the U.S. Department of Health and Human Services and is widely regarded as an important measure of the nation’s health care system, echoes many recent warnings about rising costs.

At the same time, the report underscores the increasing urgency of confronting the ever-growing burden that health care imposes on family checkbooks and government spending.

“High and rising costs expose two often overlooked problems,” Harvard economist David Cutler noted in an article accompanying the new spending projections, published in the journal Health Affairs.

“First, spending is too high because many dollars are wasted. Second, high medical costs combined with stagnant incomes for a large share of the population and the inability of governments at all levels to raise tax dollars leads to increased health and economic disparities,” Cutler wrote.

The report indicates that the rate of rising costs has moderated somewhat compared to the years before the 2008 Great Recession.

From 1990 to 2007, health care spending increased 7.3 percent a year on average, far outpacing economic growth. By contrast, annual spending is projected to increase 5.5 percent on average between 2017 and 2026, the report’s authors conclude.

But the future spending growth is considerably faster than in the decade following the recession, when costs increased 4.2 percent annually on average.