Consider the Intel Xeon $4$ cores $3\mathrm{.}6$ GHz processor developed in $2012$ and the Digital Alphastation $4/266$ developed in $1994($see Figure $1\mathrm{.}17).$ What is the annual improvement in processor performance for these two processors? Express your answer as a percentage with three significant decimal digits $($i$.$e$.,0\mathrm{.}100$ for $10\%)$