https://www.advisorperspectives.com/articles/2019/04/01/a-historical-perspective-on-inverted-yield-curves應該也要測1965-1983這段供應端驅動的高通膨時期高通膨時期為了要打擊通膨,常常要把短期利率拉到比中性利率高許多殖利率倒掛會變成常態性現象
