Is it more than 150,000 people [1]? Because that's how many people the WHO estimates currently die right now as a result of climate change. And the number is expected to go up to 250,000 by 2030-2050 [2].
Other estimates have been even higher, e.g. [3] which came up with 400,000 extra deaths due to climate change per year already.
[1] http://www.who.int/heli/risks/climate/climatechange/en/
[2] http://www.who.int/mediacentre/factsheets/fs266/en/
[3] http://www.thedailybeast.com/articles/2012/09/27/climate-cha...