The above graph shows the world population access to electricity in 1997 and in 2017. ① The percentage of the total world population with electricity access in 2017 was 11 percentage points higher than that in 1997. ② Both in 1997 and in 2017, less than 80% of the rural population had access to electricity while over 90% of the urban population had access to electricity. ③ In 1997, 36% of the rural population did not have electricity access while 5% of the urban population did not have access to electricity. ④ The percentage of the rural population without electricity access in 2017 was 20 percentage points lower than that in 1997. ⑤ The percentage of the urban population without electricity access decreased from 5% in 1997 to 3% in 2017.