Microsoft's co-founder Bill Gates continued his reign as the world's richest person with a net worth of USD 75 billion, according to Forbes' annual ranking of billionaires, with Reliance Industries Chairman Mukesh Ambani leading the pack of 84 Indian billionaires in 2016.

Forbes' 2016 list of the World's Billionaires includes 1,810 billionaires, down from a record 1,826 a year ago. Their aggregate net worth is USD 6.5 billion, USD 570 million less than last year. Gates remains the richest person in the world with a net worth of USD 75 billion, despite being USD 4.2 billion poorer than a year ago. He has been number one for 3 years in a row and topped the list 17 out of 22 years.

Here are the top five richest persons of the planet:

#1. Bill Gates

Age: 60
Net worth: $ 75 Billion
Source: Microsoft
Country: United States of America

#2. Amancio Ortega

Age: 79
Net worth: $ 67 Billion
Source: Zara
Country: Spain

#3. Warren Buffett

Age: 85
Net worth: $ 60.8 Billion
Source: Berkshire Hathway
Country: United States of America

#4. Carlos Slim Helu

Age: 76
Net worth: $50 Billion
Source: Telecom
Country: Mexico

#5. Jeff Bezos

Age: 52
Net worth: $45.2 Billion
Source: Amazon
United States of America

And here are some Indians who made it to the list:

#36. Mukesh Ambani

Age: 58
Net worth: $19.3 Billion
Source: Petrochemicals, oil and gas

#44. Dillip Shangvi

Age: 60
Net worth: $ 16.7 Billion
Source: Pharmaceuticals

#55. Azim Premji

Age: 70
Net worth: $ 15 Billion
Source: Software services

(With inputs from PTI)

(All images sourced from Reuters)