http://web.sfc.keio.ac.jp/~s01154me/tp03sp-2.pdf http://web.sfc.keio.ac.jp/~okabe/paper/tp03sp-2/index.html s01154me@sfc.keio.ac.jp 2 3 4 5 5 6 6 7 7 8 1972 9 42 p.47 10 47 8 9 11 1937 1940 1979 12 13 2001 10 14 11 12 13 14 15 100 15 16 41 17 16 18 17 18 19 20 19 20 2000 21 22 23 24 25 26 27 28 21 22 1947 29 23 7.4 9.5 7.9 13.0 30 31 23.4 14 , 1999 24 Social Stratification and Social Mobility 1 32