Year % 1994 1.10658124635993 1995 0.6326024165005489 1996 0.8044505968083159 1997 2.0414096916299598 1998 1.8152370415571197 1999 0.500486242767753 2000 2.81858508200852 2001 0.560605235944048 2011 2.56550600763653 2018 0.3168 2019 0.4058 2020 0.2251