Stacked bar chart of global clean-energy investment by category, 2004-2012, in US$ billions. Legend (verbatim, with printed typo): 'Other Investments Energy' (green), 'Solar investments' (orange), 'Wind of Invesrments' (blue, i.e. Wind Investments). Approximate values: 2004: Wind ~15, Solar ~10, Other ~10 (Total ~35) 2005: Wind ~30, Solar ~15, Other ~20 (Total ~65) 2006: Wind ~35, Solar ~20, Other ~45 (Total ~100) 2007: Wind ~55, Solar ~40, Other ~48 (Total ~143) 2008: Wind ~65, Solar ~60, Other ~45 (Total ~170) 2009: Wind ~70, Solar ~60, Other ~33 (Total ~163) 2010: Wind ~90, Solar ~100, Other ~32 (Total ~222) 2011: Wind ~78, Solar ~160, Other ~35 (Total ~273) 2012: Wind ~70, Solar ~148, Other ~24 (Total ~242)
Which year represents the highest wind investment?