A former Governor of Maryland who began serving as Governor on or after January 21, 2015, may enroll and participate in the health insurance benefit options established under the Program if the former Governor: is at least 62 years old; is receiving a normal service retirement allowance under Division II of this article; or is receiving a disability retirement allowance under Division II of this article. The surviving spouse of a deceased Governor or former Governor may enroll and participate in the health insurance benefit options established under the Program as long as the spouse is receiving a periodic allowance under Division II of this article. A former Governor described in subsection (a)(1) or (2) of this section or the surviving spouse of a deceased Governor or former Governor is entitled to 1/16 of the State subsidy allowed a State employee for each year served as Governor. A former Governor described in subsection (a)(3) of this section or the surviving spouse of a deceased former Governor is entitled to the same State subsidy allowed a State employee.