SHANGHAI, Jan. 22 (Xinhua) -- Shanghai's GDP totaled 3.27 trillion yuan (about 480 billion U.S. dollars) last year, up 6.6 percent, the municipal statistics bureau announced Tuesday.

The reading was slightly lower than the 6.9-percent increase in 2017. It kept pace with the country's 6.6-percent GDP growth last year.

The tertiary industry was the largest contributor to the city's GDP last year, accounting for 69.9 percent of the total.

Value added in the primary industry dropped 6.9 percent, while growth in secondary and tertiary industries was 1.8 percent and 8.7 percent, respectively.

Shanghai's total retail sales of consumer goods rose 7.9 percent to reach 1.27 trillion yuan in 2018. Strong growth was posted in the city's online sales, whose volume reached 150.7 billion yuan, a year-on-year increase of 15.8 percent, up 6.2 percentage points.

The city's total investment in fixed assets posted a year-on-year growth of 5.2 percent.

The city's per capita disposable income stood at 64,183 yuan last year, up 7.1 percent year on year in real terms after deducting price factors.