年份

IU

NU

2010

0.640663

1.142315

2011

0.637578

1.144332

2012

0.623177

1.130621

2013

0.618391

1.136423

2014

0.60885

1.141227

2015

0.596711

1.133751

2016

0.58526

1.131503

2017

0.574087

1.125268

2018

0.55587

1.121641