Phuc loves investing but he does not like risky investment so he typically invests in low-risk assets. Phuc has been following the Vanguard Australian Fixed Interest Index Fund for years. He found that if the index return is positive in one year, there is a 80% chance that it will be positive the following year. If the index return is negative in one year, there is a 55% chance that it will be positive the following year. The index return is negative this year. What is the steady state probability that the index return is positive?