This comes out to a 60 % growth rate, but the figure changes significantly based on the observation points: if the index experiences very slow growth for most of the term, only to
see rapid growth late in the term, then the average appreciation will decrease, since 67,500 divided by 5 is 13,500, or 35 % growth.
Third generation solar cells are
seeing rapid growth, organic solar is breaking records, and the solar power bikini is the
latest rage.