Digital advertising investment across Asia-Pacific is projected to increase 17.9% to $41.07 billion this year, according to eMarketer’s latest estimates of global digital ad spending.

With online and mobile advertising spend totaling $18.96 billion this year, China is set to maintain the largest share of the region’s digital ad market, at 46.2% in 2014.

Perhaps the most interesting story is Indonesia, which will be the leading country for growth in digital ad investment at 75% this year. Indonesia will near South Korea at $2.85 billion in digital advertising spend by 2018.