Shown below are rental and leasing revenue figures for office machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to construct a trend line and forecast the rental and leasing revenue for the year 2014 using these data.
Year .... Rental and Leasing ($ millions)
2004 .... 5,860
2005 .... 6,632
2006 .... 7,125
2007 .... 6,000
2008 .... 4,380
2009 .... 3,326
2010 .... 2,642