Stata
#26 11
#27 11
#28 11
#29 10
#30 10
#31 9
#32 9
#33 8
#34 7
#35 7
#36 7
#37 7
#38 7
#39 6
#40 5
#41 5
#42 5
#43 5
#44 5
#45 4
#46 4
#47 4
#48 3
#49 3
#50 3
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