The department, in consultation with the Supreme Judicial Court and interested parties, shall adopt rules in accordance with Title 5, chapter 375, establishing a child support table that reflects the percentage of combined gross income that parents living in the same household in this State ordinarily spend on their children. Rules adopted pursuant to this section are routine technical rules pursuant to Title 5, chapter 375, subchapter II‑A.   [PL 2001, c. 554, §11 (NEW).]