For example, U.S. farmland had a total value of $1.9 trillion in 2010, compared with $16.5 trillion for the US stock market and $16.6 trillion for the US housing market. And large-scale farmland bubbles are quite rare: there was only one in the US in the entire twentieth century, during the great population scare of the 1970’s.
农地在重要性上显然比不上其他投机资产。比如美国全国的农地在2010年总值约为1.9万亿美元，而股票市场和住宅市场则分别高达16.5万亿和16.6万亿美元。同时大规模的农地泡沫也非常罕见：在20世纪的美国仅仅发生过一次，那是在1970年代人们恐慌人口过度暴增的时期。