The world economy is going through a rough patch, yet the world's billionaire population is at an all-time high.

According a CNBC report, a new survey shows that 155 new billionaires were minted this year, pushing the total population to a record 2,325 – a 7 percent increase from 2013.

Credit goes to the United States – home to the most billionaires globally – where 57 new billionaires were recorded this year, according to the Wealth-X and UBS Billionaire Census 2014.

In Africa, billionaires' total wealth grew, but the overall number of billionaires decreased, due primarily to volatile socio-political conditions. A similar situation occurred in the Middle East.

Nevertheless, the combined wealth of the world's billionaires increased by 12 percent to $7.3 trillion, higher than the combined market capitalization of all the companies that make up the Dow Jones Industrial Average.

The average billionaire is 63 years old, with a net worth of $3.1 billion, according to the report, which noted that most wealthy individuals do not reach the $1 billion threshold until their late forties.

Almost 90 percent of male billionaires are married, 6 percent are divorced, 3 percent are single and 2 percent widowed.

For male billionaires the top five industries are finance and banking, industrial conglomerates, real estate, manufacturing and textiles, and apparel and luxury goods.

Sixty-five percent of female billionaires are married, 10 percent divorced, 4 percent single and 21 percent widowed.

They are involved in similar industries to their male peers, but one difference is that many run non-profit and social organizations.