Detroit Shock biggest year-to-year improvement/decline
based on regular season win percentage:

                            Change in 
                              win %
Improvement: 2002 -> 2003     0.454   (0.281 -> 0.735)
Decline:     2003 -> 2004    -0.235   (0.735 -> 0.500)
Last Year:   2007 -> 2008    -0.059   (0.706 -> 0.647)