Foreign firms doubled their share of natural gas production in that period, to 12 percent, the Energy Department said.

Apple almost doubled its share of the smartphone market over the last year, up from 8.2 in 2008.

Between 2006 and 2008 the party doubled its share of vote from 6.3% to 12.3%.

African-Americans had almost doubled their share of the population to 0.6%.

Since 1970, they have more than doubled their share of world exports.

The party more than doubled its share of the vote, yet no candidate, including Duguay, won a seat.

Medicare is expected to nearly double its share of the nation's economy by 2030, crowding out other federal spending and economic activity.

"Should you double my share of the estate, you will keep half?"

In the 2008 general election they almost doubled their share of vote to 9.4%.

Merck hopes the deal will double its share of the drug market - to 20 percent - within 10 years.