In Exercise, refer to the following graph, which illustrates the number of registered nurs...

In Exercise, refer to the following graph, which illustrates the number of registered nurses (RNs) needed (demand) and the number of RNs available (supply) from 2000 to 2010. The graph also illustrates the projected number of RNs needed and the projected number of RNs available from 2011 to 2020.

Estimate the difference in the number of RNs needed and the number of RNs available in 2010.