You have a planning horizon of 9 years and wish to immunize your investment over that horizon. To do so, you have two financial instruments available: A and B. Instrument A has a duration of 1 years, and instrument B has a duration of 12 years. Find the proportion of your money that you need to invest in instrument A in order to achieve your immunization goal. Give the answer as a percentage with two decimals; e.g., 23.55, but as always do not write the % sign.