2000.5  2000  -16.1144 
2001.5  2001  -13.3238 
2002.5  2002  -11.6174 
2003.5  2003  -21.3010 
2004.5  2004  -9.1992 
2005.5  2005  -15.3039 
2006.5  2006  -6.2392 
2007.5  2007  -6.6928 
2008.5  2008  -6.7221 
2009.5  2009  -1.1858 
2010.5  2010  -6.4918 
2011.5  2011  -6.8692 
2012.5  2012  -11.5885 
2013.5  2013  -7.4044 
2014.5  2014  -5.3321