DMU

θ (A/B)

σ (A/B)

φS (A/B)

Returns to scale

2008

1

1

1

No change

2009

1

1

1

No change

2010

1

1

1

No change

2011

1

1

1

No change

2012

1

1

1

No change

2013

1

1

1

No change

2014

1

1

1

No change