| | | | 20 486.76 | | | | | | | | | | | 6.1 | 34.5% 1998 ~ | 2010 | 2010 ~ 2020 | | 20 | | | | | | | | | | | | | | | | | | | | 2017 | | 56652. | 9 1997 12.6 | 2017 | 50003 1997 12.8 | | | | | | |