1665-6423 1665-6423 S1665-64232018000400255 Japan 00 00 2018 00 00 2018 16 4 255 266

2001 15 2 2 413-28 2004 76 2 2 603-14 1998 77 9 9 1017-20 2007 79 154-60 2016 111 859-68 Energy Information Administration, EIA 2016 2014 28 4 4 2402-7 2003 70 2 2 185-97 2014 International Energy Agency, IEA 2016 2011 521 1-2 1-2 130-8 2015 154 370-9 2015 43 7 7 769-77 2013 27 12 12 7287 − 7293 2013 54 138-43 2013 91 3 3 464-76 2015 43 7 7 779-89 2007 86 12-13 12-13 1664-83 2000 79 10 10 1145-54 2013 54 1 1 111-9 2009 23 9 9 4533-9 2010 24 6 6 3540-50 2014 28 3688-95 2013 103 22-8 2016 121 376-86 2015 115 233-41