An interdisciplinary team from MIT estimated that given the expected growth of nuclear power from 2005 to 2055, at least four core damage incidents would be expected in that period (assuming only "current" designs were used – the number of incidents expected in that same time period with the use of advanced designs is only one). To date, there have been five core damage incidents in the world since 1970 (one at Three Mile Island in 1979; one at Chernobyl in 1986; and three at Fukushima-Daiichi in 2011), corresponding to the beginning of the operation of generation II reactors.