Answer distribution
Year 2017Year 2016Year 2015Year 2014Year 2013Year 2012
14.89.64.28.723.423.1
211.513.516.835.641.156.4
383.776.579.055.735.520.5

Choices for answers

  1. No (value when calculating levels: -2.0)
  2. I don't know (value when calculating levels: -2.0)
  3. Yes (value when calculating levels: 2.0)

The question affects following sections