I haven't been following iTunes too intensely lately and only have checked time to time. However, I check it and 24k Magic is number 2 and then it's number 9 and A couple days later it's number 1 and then 5 and then 1 again lol.
iTunes:
#1 Lebanon
#1 Norway
#1 Sweden
#2 Lebanon
#2 Romania
#2 Ukraine
#3 Sweden
#3 Vietnam
#4 Netherlands
#5 Denmark
#5 Estonia
#9 Netherlands
#10 United Arab Emirates
#12 Russia
#15 Israel
#15 Russia
#15 Turkmenistan
#20 Slovakia
#22 Kazakhstan
#25 Finland
#27 Poland
#34 Thailand
#36 Taiwan
#49 Malaysia
#53 Belgium
#53 South Africa
#65 Netherlands
#75 Indonesia
#81 Sweden
#83 Philippines
#83 Switzerland
#85 Germany
#85 Portugal
#98 Austria
#99 Thailand
#100 Switzerland
#120 Finland
#124 Hong Kong
#132 Luxembourg
#134 Singapore
#136 Singapore
Album: ABBA Gold
iTunes:
#3 Belarus
#3 Sri Lanka
#4 Denmark
#4 Norway
#4 Oman
#4 Uzbekistan
#5 Spain
#6 Papua New Guinea
#6 Singapore
#7 Sweden
#8 Estonia
#8 Israel
#9 Austria
#11 Russia
#14 Lebanon
#14 Vietnam
#15 Kenya
#15 South Africa
#18 Antigua and Barbuda
#18 Barbados
#18 Bulgaria
#18 Greece
#18 Romania
#20 Cyprus
#22 Lithuania
#23 India
#23 Portugal
#25 France
#26 Netherlands
#27 Belgium
#27 Ireland
#28 Egypt
#29 Slovakia
#30 Australia
#30 Kazakhstan
#32 Kyrgyzstan
#32 Mauritius
#32 New Zealand
#32 Trinidad and Tobago
#35 Italy
#35 Panama
#35 Slovenia
#36 Luxembourg
#37 Germany
#37 Poland
#39 Burkina Faso
#39 Costa Rica
#39 Latvia
#40 Czech Republic
#40 Malta
#41 United Kingdom
#41 Ecuador
#41 Saudi Arabia
#42 Namibia
#43 El Salvador
#43 Nicaragua
#45 Cape Verde
#45 Finland
#45 Turkey
#45 United Arab Emirates
#46 Paraguay
#47 Bolivia
#50 Philippines
#87 Colombia
#129 Taiwan
#137 Japan
#160 Hong Kong
#163 Indonesia