(1) the statistical credibility of incurred claims experience and earned premiums;

(2) the period for which rates are computed to provide coverage;

(3) experienced and projected trends;

(4) the concentration of experience within early policy duration;

(5) expected claim fluctuation;

(6) experienced refunds, adjustments, or dividends;

(7) renewability features;

(8) all appropriate expense factors;

(9) interest;

(10) the experimental nature of the coverage;

(11) policy reserves;

(12) the mix of business by risk classification; and

(13) product features, including long elimination periods, high deductibles, and high maximum limits.