Has 73% Market Share Against India's 6%: Report India might have gained a headstart in the carbon market but it has been left behind by the China juggernaut. The latter has become the world leader in the carbon credit business with a market share of 73% in the volume of credits traded in 2007 as compared to India's 6%, a recently released World Bank report has said. But the entire carbon market could be in for a major shake-up depending on how the negotiations on the future of the Kyoto Protocol, which are to be concluded by 2009, shape up.