年份

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

2019

P(x)

0.0112

0.0978

0.1765

0.3664

0.4482

0.5388

0.6067

0.6507

0.6327

0.6924

0.4800

0.6903

0.8566

0.8973