Data not available for obim on 10/20/2016.
Data available for obim
198905 198906 198907 198908 198909
198910 198911 199004 199005 199006
199007 199008 199009 199010 199104
199105 199106 199107 199206 199207
199208 199209 199210 199305 199306
199307 199308 199309 199310 199311
199312 199401 199402 199403 199404
199405 199406 199407 199408 199409
199410 199411