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1^ The authors acknowledge support of this work through the MATCH Programme (UK Engineering and Physical Sciences

Research Council grants numbers GR/S29874/01, EP/F063822/1 and EP/G012393/1).

**^* Correlation is significant at the 0.05 level (2-tailed).

^** Correlation is significant at the 0.01 level (2-tailed).

*

*

*

*^* Correlation is significant at the 0.05 level (2-tailed).

^** Correlation is significant at the 0.01 level (2-tailed).

*^** Correlation is significant at the 0.01 level (2-tailed).

2^ According to a survey (Figure 8) conducted from a career advice private company updated in January 2013 and included 96,062 participants (58,636 male and 37,426 female).

3^ This question is a following to the previous question on the survey’s questionnaire

4^ Currency value transformed using the average currency rate between US dollar and GB sterling for a period of 18 months starting in January 2012 and ending in June 2013 (£1= $1.57)

5^ What is implied by Pareto Improvement Criterion in CBA is that an improvement in welfare, without any other changes in other measures, is considered socially accepted.