A nonprofit group has compiled the numbers from data collected by the state.
The UK figure, from data collected in 2013, is at its highest since 1970.
But determining long-term trends from data collected over short periods is notoriously difficult.
Botswana's poverty figure, for example, is an estimate that extrapolates from data collected in 1993.
There is some backing from data, collected by US research firm NPD, which suggests that 75% of smartphones in use in the US have screens smaller than 4.5in.
The suicides tend to be more frequent among older veterans, she said, citing statistics from data collected by the Centers for Disease Control and Prevention.
A small nonprofit group, the Center for Medical Consumers, compiled the numbers from data collected on every hospital patient by the State Health Department.
"This shouldn't have happened," said Ron Harbour, president of Harbour & Associates, a consulting and research firm in Troy, Mich., that compiles the annual report from data collected from automakers.
The researchers, based at the University of Washington, worked from data collected for the Women's Health Initiative, a research project that previously showed the heart dangers of hormone supplements.
She found that the main research on fertility rates comes from data collected in the 19th century, based on the age of women at the time of their marriage.
The discovery was made from data collected before the Large Hadron Collider switched on again earlier this year after a planned upgrade which allowed it to run at higher energy.
