199012
199104
199108
199109
199403
199405
199502
199507
200110
199510
199510
199602
199606
199605
199701
199702
199702
199803
199902
199902
199909
200003
200103
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200206
200404
200509
200605
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200703
200912
201005
201104
201106
201011
201011
201106
201111