How many languages are spoken in your office?

Sometime ago, I blogged about the diversity of Asian languages in the world.  Here  in the United States, the number of speakers of international languages continue to rise (or perhaps become more outspoken to request interpretation services).  According to Language Line Services (a language access provider headquartered in California that provides interpretation services for over 170 languages), between the fourth quarter 2010 and fourth quarter 2011, the five most requested languages for over the phone interpretations nationwide are Spanish, Arabic, Vietnamese, Mandarin Chinese, and Burmese.

If you are a manager or supervisor in your company, do you know how many languages are spoken in your office?  Why should you care?