经济学家根据过去五年的数据推算出明年的GDP增长率。

The economist ___extrapolates next year's GDP growth rate based on data from the past five years.

根据过去十年的销售数据，他推断出明年的市场需求将会增长。

Based on the sales data from the past decade, he ___extrapolates that market demand will increase next year.