For the purpose of establishing the liability of companies doing a surety business and of insurance companies other than life, the amount required to safely reinsure all outstanding risks shall be estimated by taking fifty percent of the gross annual premiums on all surety bonds, risks, and policies in force that have less than one year to run, and pro rata of all gross premiums on risks that have more than one year to run.
C.R.S. § 10-4-105