This chart shows the 9 things the world's richest people worry about

When you're unbelievably wealthy, it's hard to imagine you'd have much to worry about.

After all, you don't have to worry about getting food on the table, being able to buy a house big enough for your family, or even taking time out to change careers because you have enough in the bank to take a break.

However, luxury estate agent Knight Frank teamed up with high-net worth research firm Wealth-X to deliver a comprehensive "Wealth Report" on everything that makes the richest people in the world tick.

Nestled in the huge report there was one chart that illustrated some of the world's wealthiest people's concerns - and personal issues or family's health was right at the bottom of the list of worries.

While issues like succession and inheritance still dominate rich people's concerns after 10 years, it's interesting to see worries over the global economy and staying compliant have dramatically increased.

In other words, the world's wealthiest are worried about falling foul of the law when it comes to making their money.