Karan's annual CTC (Cost to the Company) has two parts – a fixed part and a variable part. His annual CTC increased by 25% and the fixed part in it increased by 20% in 2013 when compared with that of 2012. In 2014, both his annual CTC as well as the variable part in it increased by 33⅓%. If Karan did not receive any bonus from the company in the three given years, then, by what percentage did the fixed part of his annual CTC increase in 2014 when compared with that of 2013?