年間データ
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
0.00
0.15
0.30
0.45
0.60
2023
0.43
−0.08
−15.40%
2022
0.51
−0.05
−8.52%
2021
0.56
−0.01
−2.06%
2020
0.57
+0.11
+23.20%
2019
0.46
−0.06
−10.79%