The 2009 figure is not the year, but a result (the PDF [1] has the Copyright set in 1999)
(Cray I + IBM 801 + RISC II + Clipper C300 + AMD 29K + Motorola 88K + IBM 601 + Intel i960 + Alpha 21164 + POWER 2 + MIPS R4000 + Hitahi SuperH4 + StrongARM 110 + Sparc 64) / 14 = 28126 / 14 = 2009
[1] http://mmix.cs.hm.edu/doc/fasc1.pdf#page=7&zoom=auto,-250,56...