Unsubsidized part B premium amount
(I)#
200 percent of the monthly actuarial rate for enrollees age 65 and over (as determined under subsection (a)(1) for the year); plus
(II)#
4 times the amount of the increase in the monthly premium under subsection (a)(6) for a month in the year (or, with respect to an individual enrolled under section 1395 o (b) of this title and not otherwise enrolled under this part, 0 times the amount of such increase).