年份

2008~2009

32.028%

32.014%

2.932%

2009~2010

33.620%

33.607%

2.814%

2010~2011

34.343%

34.338%

1.821%

2011~2012

33.688%

33.678%

2.419%

2012~2013

32.459%

32.444%

3.062%