How much do bilingual dental istants earn an hour?

Most dental istants in my area are multilingual. The pay scale is dependent on whether you are a dental istant (DA) or a registered dental istant(RDA) . The pay is dependent on the number of certifications you hold. (x-ray license, coronal polish, etc). My RDA's earn between $24.50 and 27.50 per hour depending on seniority (San Francisco Bay Area)