This is an improvement as the most populous nation in Africa was ranked 91st in 2018.
The report was released by the Sustainable Development Solutions Network for the United Nations on March 20 which has was declared as World Happiness Day by the UN General Assembly in 2012.
Finland has topped a global happiness ranking for the second year in a row while Uganda ranks second happiest country in East Africa after Kenya.
The ranking saw the US drop one place, to 19th, while people in South Sudan were the least happy. It examined factors including life expectancy, freedom, GDP and corruption.
The report showed that the annual data for Finland have continued their modest, but steady upward trend since 2014. Nevertheless Israel remains ahead of such countries as the United Kingdom (15), Germany (17) and the U.S. (19).
But the Danes have stymied the haemorrhaging and are back up to second in UN's latest 2019 World Happiness report (here in English).
"After the 2011 quake and now the terrorist attack in Christchurch, with high social capital, where people are connected, people rally and help each other and (in after the earthquake) rebuild immediately".
The other Nordic countries, as well as the Netherlands, Switzerland, Canada, New Zealand and Austria also made the top ten.
"This year´s report provides sobering evidence of how addictions are causing considerable unhappiness and depression in the United States", said professor Jeffrey Sachs, one of the report´s authors.
People in war-torn South Sudan are the most unhappy with their lives, followed by Central African Republic (155), Afghanistan (154), Tanzania (153) and Rwanda (152).
This year´s publication also looked at how countries have performed in the happiness rankings since 2005.