Festive demand has fueled an 8.5 per cent year-on-year growth in gross Goods and Services Tax (GST) collections for November, reaching a total of Rs 1.8 lakh crore. According to government data released on Sunday, the Central GST collection stood at Rs 34,141 crore, State GST at Rs 43,047 crore, Integrated IGST at Rs 91,828 crore and cess at Rs 13,253 crore.