174 28 92 2 1988 2.6 2000 2.33~3 2.5 1911 4.5 2000 2.6 1991 2.48 / 2000 2.3 1995 2.5 1991 3.4 2001 3.1 2021 2.79~3.02 1965 5.8 2000 4.1 90 3.1 / 3 130 2