JAKARTA, Jan 3 (Reuters) - Indonesia"s annual inflation rate hit an 18-month high in December, reaching 1.87%, driven by rising prices of foodstuff and plane tickets, data issued by the country"s statistics bureau showed on Monday. A Reuters poll had expected a rate of 1.80% in December. The previous month"s inflation rate was 1.75%. Bank Indonesia is targetting inflation to be within a range of 2% to 4% for 2021 and 2022. The December core inflation rate, excluding government-controlled and volatile prices, rose to 1.56%, from 1.44% in November. The poll had expected 1.52%.