translation.en: Now the history that we've achieved is that we've grown at 2.0 percent per year over the whole period, 1891 to 2007, and remember it's been a little bit negative since 2007.
translation.zh: 从1891年到2007年，美国经济 的年增长率 是2.0% 请记住，2007年以后，经济就出现了负增长，