translation.en: We looked at the GDP and productivity growth of Germany and calculated the following scenario: if Germany wants to continue this GDP and productivity growth, we could directly calculate how many people Germany would need to support this growth.
translation.zh: 我们研究了过去20年 德国的GDP和生产力增长， 计算出了以下情形： 如果德国的GDP和生产力想要继续增长， 我们可以直接计算出 德国需要多少人来支撑这种增长。