HOHHOT, Jan. 23 (Xinhua) -- North China's Inner Mongolia Autonomous Region reported GDP of 1.73 trillion yuan (255 billion U.S. dollars) in 2018, up 5.3 percent, authorities said Wednesday.

According to the region's statistics bureau, last year, value added in the primary industry rose 3.2 percent to 175.4 billion yuan, and that in the secondary industry reached 680.7 billion yuan, up 5.1 percent.

Value added in the tertiary industry grew 6 percent to 872.8 billion yuan. The tertiary industry was also the largest contributor to the region's GDP last year, accounting for over 50 percent of the total.