"Semitool Corp. has an expected excess return of $20\%$ for next year. However, for every unexpected $1\%$ change in the market, Semitool's return responds by a factor of $0\mathrm{.}9.$ Suppose it turns out that the economy and the stock market do better than expected by $10\%$ and Semitool's products experience more rapid growth than anticipated, pushing up the stock price by another $4\%.$ Based on this information, what was Semitool's actual excess return? Note: Express your answers in strictly numerical terms. For example, if the answer is $5\%,$ write $0\mathrm{.}05"$