Chester owned a number of vacant properties throughout the city. This year, he decided to donate one such property to his local municipality so they could construct a new park. The municipality qualifies as a registered charity for CRA purposes. Chester bought the property for $30,000 in 1980; at the time of the donation, it was worth $180,000. Chester's net income before the donation was $70,000. On what amount can Chester claim the federal charitable donations tax credit?