25. Trade and other receivables

 31 December 2016 31 December 2015
Trade receivables from related parties12.766.6
Trade receivables from third parties1,567.91,391.7
Tax and social security receivables51.191.9
Other receivables56.368.9
Total1,688.01,619.1

Trade receivables from third parties include primarily receivables from individual customers, media houses and distributors.

Trade receivables by currency

Currency31 December 2016 31 December 2015
PLN1,530.81,382.5
EUR25.840.2
USD18.832.7
Other5.22.9
Total1,580.61,458.3

Movements in the allowance for impairment of accounts receivable

 20162015
Opening balance95.375.0
Acquisition of subsidiary-0.2
Increase58.564.1
Reversal(11.1)(12.7)
Utilisation(40.4)(31.3)
Closing balance102.395.3
Of which:Short-term79.473.9
                Long-term22.921.4