In 1923 koalas were set on Kangaroo Island off coast of Australia. In 1996 population was 5000. By 2005 population had grown to 26000, prompting debate on how to handle their growth and evade koalas dying of starvation. Supposing exponential growth, determine continuous rate of growth of koala population between 1996 and 2005. Compute the formula for population as the function of years since 1996, and find population in year 2025.