Beijing: China's economy grew 6.9 percent year-on-year in 2015, the slowest annual expansion in a quarter of a century, according to the data from the National Bureau of Statistics (NBS) released on Tuesday.
Growth in the fourth quarter came in at 6.8 percent year-on-year, the lowest quarterly rate since the global financial crisis, Xinhua cited from the data.
The Chinese government targeted an annual economic growth of around 7 percent for 2015.
The country's gross domestic product (GDP) reached 67.67 trillion yuan (about $10.3 trillion) in 2015, with the service sector accounting for 50.5 percent, according to the NBS.
China's economy still "ran within a reasonable range" in 2015, with its structure further optimised, upgrading accelerated, new growth drivers strengthened and people's lives improved, NBS chief Wang Baoan said.
However, the country faces a daunting task in deepening reforms on all fronts and needs to step up supply-side structural reforms, he said.
Sagging global trade, rising financial risks and changing domestic market conditions were among the factors affecting the economy, Wang said.
He also pointed to an ailing property sector and stock market fluctuations but said their impact on the economy was either limited or yet to be evaluated.
Wang dismissed worries about China's government debts, noting that they accounted for less than 40 percent of the country's GDP, well below the internationally accepted alert line of 60 percent.
Viewed against an international backdrop, a 6.9 percent growth was "not a low rate" and outshined other global economies, Wang said, defending it as a hard-won achievement.
Though slowing, China still contributed more than 25 percent of the global economic growth, he said.
China's efforts to make the economy greener and more productive also sank in, with energy consumption per unit of GDP falling 5.6 percent and overall labour productivity, measured by output per worker, rising 4,733 yuan last year, Wang said.