'second biggest contributor' is correct and can be used in written English.
You can use it to describe something or someone who is the next largest source among other sources. For example, "China is the second biggest contributor to global warming after the United States."
France is the second biggest contributor to US-led airstrikes against Isis.
The second biggest contributor is Murray Energy, that boasts it is "the largest privately owned coal company in America".
Britain is the second biggest contributor to the United States-led coalition in Afghanistan, with 9,000 soldiers deployed there, compared with more than 68,000 Americans.
Although the toxic smoke from the primitive stoves is one of the leading environmental causes of death and disease, and perhaps the second biggest contributor to global warming, after the industrial use of fossil fuels, it has long been neglected by governments and private aid organizations.
Asked for his response to the suggestion that the cuts are leading Britain to decline in influence on the world stage, he said: "I don't accept that for a minute", pointing out that the UK is the second biggest contributor to the campaign in Iraq after the US.
Red Hat, the second biggest contributor, is far behind, with 7.4percentt.
France has about 3,750 troops in Afghanistan, making it the fourth biggest contributor to the international military mission.
France has about 3,800 troops in Afghanistan, making it the fourth biggest contributor to the international military mission there.
China now provides around 3,000 of the more than 106,500 UN troops, police and advisers deployed by all countries, making it the ninth biggest contributor of peacekeeping personnel.
At present no efforts are being made to set these up, however.' Rising production of ozone is alarming because the gas is the third biggest contributor to global warming.
It's not all bad though – our spending on recreation and culture was up a solid 3.5% and was the fourth biggest contributor to the growth of spending: We are still purchasing houses at a strong clip, but even that does seem to be coming off the boil a bit: One thing that also remains largely unchanged is the weak growth in labour costs and the incomes going to employees.
