Year Percent 1999-01-01 0.005000000000000000 2000-01-01 0.003000000000000000 2001-01-01 0.015000000000000000 2002-01-01 0.061000000000000000 2003-01-01 0.057999999999999996 2004-01-01 0.092000000000000000 2005-01-01 0.170262000000000000 2006-01-01 0.327432000000000000 2007-01-01 0.327846000000000000