Year % 1988 76.48047 1989 9.917817 1990 12.00767 1992 0.5098341 1995 0.0427862 1996 0.4064087 1997 0.3809758 1998 0.7099718 1999 0.5529911 2000 0.8022549 2001 0.7246515 2002 0.5259138 2003 0.8251167 2004 0.8428071 2005 0.8767464 2006 0.8014417 2007 0.7689759 2008 0.9420902 2009 0.838927 2010 0.885904 2011 0.9059079 2012 0.8594661 2013 0.7778858 2014 0.39496 2015 0.3994933 2016 0.8139639 2017 0.3804122 2018 0.3775884 2020 0.3747348 2021 0.3637902