Indonesia's motorbike sales, a barometer for purchasing power of middle and low-income groups in the country, drifted higher in November, the motorcycle industry association said here on Wednesday.

The motorcycle sales logged a 8.6 percent growth to 597,366 units in November year-over-year, data from the association revealed.

That is the fifth consecutive annualized growth in motorbike sales since July.

Data from the association unveiled that the annual motorcycle-sales growth in the previous four months, including those in October, September, August, and July which recorded growth respectively 5.3, 2.0, 2.4 and 10.3 percent, have expanded positively.

The growth in the sales was contributed by the rising prices and demand of commodities, the major exported products from Indonesia, which culminated to the strengthening of the people's buying power, according Sigit Kumala, head of the association's commerce department.

That was in line with the data from the national statistics bureau which said that the annualized core inflation, stripping off administered prices and volatile food prices, ticked up 3.03 percent in November from 2.94 percent in October.

By this year, the association was upbeat over a 6.3 million units sales target.

Consumption accounts for over half of the gross domestic product in Indonesia, home of over 260 million people, most of whom growing middle class.