Complex sentence: The length of roads in Delhi increased 17% (from 22,487 km in 1991 to 31,183 km in 2008) and currently occupy 21% of the land area with 1,284 km of road per 100 km 2.
Split into simpler sentences: The length of roads in Delhi increased 17% (from 22,487 km in 1991 to 31,183 km in 2008). Roads currently occupy 21% of the land area with 1,284 km of road per 100 km 2.