Year Measure 1990 0.00963 1991 0.00786 1992 0.00725 1993 0.0092 1994 0.01064 1995 0.00884 1996 0.00778 1997 0.00711 1998 0.0101 1999 0.01013 2000 0.00835 2001 0.00806 2002 0.00879 2003 0.00811 2004 0.01055 2005 0.01135 2006 0.01005 2007 0.01071 2008 0.01029 2009 0.01091 2010 0.01397