A record number of businesses, spanning nearly every industry and major geographic area of the United States, ranked as top scorers in this year’s Corporate Equality Index released by the Human Rights Campaign Foundation.

When the CEI was launched in 2001, only 13 businesses achieved a top score. This year, a record 252 businesses, including 12 insurers, achieved the top rating of 100 percent.

According to HRC, the results demonstrate that a new normal has arrived:

The policies, benefits and practices businesses must implement to earn a perfect score are best-in-class demonstrations of corporate commitments to LGBT workers.”

The number of insurers achieving the top rating almost doubled to 12, up from seven a year ago.

Insurers receiving the 100 percent rating this year are: AAA Northern California, Nevada and Utah, AIG, Blue Cross Blue Shield of Florida, Chubb Corp, Hartford Financial Services Group, Harvard Pilgrim Health Care, ING North America, MetLife Nationwide, Progressive Corp, Prudential Financial, and Sun Life Financial.

Aon, Deloitte and Marsh & McLennan were among other insurance-related businesses to earn the top rating.

The CEI rates employers on a scale from 0 to 100 percent based on their LGBT workplace policies, benefits and practices, including non-discrimination policies and training, partner benefits, transgender inclusive health insurance coverage and LGBT resource groups.

A total of 889 businesses have been rated in the 2013 CEI, including the entire Fortune 500. This year saw the largest growth in the survey’s history with 54 new businesses participating.