World's richest royals

1.King Bhumibol Adulyadej

Age: 82

Net Worth: $30.0 billion

World's longest-reigning monarch battled personal health crisis, political unrest. Highly revered King for Thailand.

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2.Sultan Haji Hassanal Bolkiah 

Net Worth: $20 billion

Age: 63

Country : Brunei

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3.King Abdullah bin Abul Aziz

Country : Saudi Arabia

Fortune: $18 billion (up)

Age: 86

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4.Sheikh Khalifa bin Zayed Al Nahayan

Country : United Arab Emirates

Fortune: $15 billion (down)

Age: 62

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5.Sheikh Mohammed bin Rashid Al Maktoum

Country : Dubai

Fortune: $4.5 billion (down)

Age: 60

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6.Prince Hans-Adam II von und zu Liechtenstein

Country : Liechtenstein

Fortune: $3.5 billion (unchanged)

Age: 65

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7.King Mohammed IV

Country : Morocco

Fortune: $2.5 billion (unchanged)

Age: 46

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8.Sheikh Hamad bin Khalifa Al Thani

Country :  Qatar

Fortune: $2.4 billion (up)

Age: 58

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9.Prince Albert II Monaco

Country :Monaco

Fortune: $1 billion (unchanged)

Age: 52

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10.Prince Karim Al Husseini

Country : Aga Khan

Fortune: $800 million (unchanged)

Age: 73

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The World's richest royals struggled to maintain their Fortune. Total worth is down by 9%; the biggest loser is Dubai's monarch, whose lose more than 60%.