October 30 (SeeNews) - Croatian tourism company Imperial Riviera [ZSE:HIMR] said on Friday its earnings before interest, taxes, depreciation and amortization (EBITDA) plummeted 71% year-on-year to 32.4 million kuna ($5.0 million/4.3 million euro) in the first nine-months of 2020, due to the coronavirus crisis which hit the tourism sector.