2003,2004,2005,2006 0.28, 0.16,0.24,0.27 0.07, 0.05,0.05,0.07 0, 0.14,0.13,0.21 0.03, 0,0,0 0.43, 0.56,0.48,0.08 0, 0,0,0.32 0.19, 0.08,0.1,0.05