Database: world_development_indicators
Question: Which European countries had the highest private expenditure on health in 2005? List the top ten countries in descending order and find the source of the data.
SQL: SELECT DISTINCT T1.CountryCode, T3.Description FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode INNER JOIN CountryNotes AS T3 ON T1.CountryCode = T3.Countrycode WHERE T2.IndicatorName = 'Out-of-pocket health expenditure (% of private expenditure on health)' AND T2.Value > 0 AND T2.year = 2005 ORDER BY T2.Value DESC LIMIT 10