Data not available for opri on 10/14/2014.
Data available for opri
198501 198502 198505 198506 198507
198508 198509 198510 198511 198512
198601 198602 198603 198604 198605
198606 198607 198608 198609 198610
198611 198612 198701 198702 198703
198704 198705 198706 198707 198708
198709 198710 198711 198712 198801
198802 198803 198804 198805 198806
198807 198808 198809 198810 198811
198812 198901 198902 198903 198904
198905 198906 198907 198908 198909
198910 198911 198912 199001 199002
199003 199004 199005 199006 199007
199008 199009 199010 199011 199012
199101 199102 199103 199104 199105
199106 199107 199108 199109 199110
199111 199112 199201 199202 199203
199204 199205 199206 199207 199208
199211 199212 199301 199302 199303