After further development, the system now puts out energy, in proportion to its weight, about 100 times greater than an equivalent weight of lithium-ion battery.
The proportion of women who were using a modern method when interviewed increased from 7 to 15% (equivalent to an average annual increase of 0.6 percentage points).
采访时使用现代避孕方法的女性比例从7%增加到15%（相当于年均增加0.6个百分点）。
3
As a proportion of the economy, that's roughly equivalent to the losses suffered in the savings-and-loan debacle of the late 1980s and early 1990s.