Kigali number of rainy days experienced during a year, but has also caused an increase in frequency of torrential rains. Strategic Foresight also characterise Rwanda as a fast warming country, with an increase in average temperature of between 0.7 °C to 0.9 °C over fifty years. As of the 2012 Rwandan census, the population of Kigali was 1,132,686, with an urban population of 859,332. At the time of independence in 1962, Kigali had a population of 6,000, consisting primarily of those associated with the Belgian colonial residency. The population grew considerably after it was named as the independent nation's capital, although
Kigali it remained a relatively small city until the 1970s due to government policies restricting rural-to-urban migration. The population reached 115,000 by 1978, and 235,000 by 1991. The city lost a large fraction of its population during the 1994 genocide, including those killed and those who fled to neighbouring countries. From 1995, however, the economy began to recover and large numbers of long-term Tutsi refugees returned from Uganda. Many of these refugees settled in Kigali and other urban areas, due to difficulty in obtaining land in other parts of the country. This phenomenon, coupled with a high birth rate and increased