One web search result from MSN explicitly mentions that the European average for the income share of the richest 0.1% is 4.5%. However, other provided search results are generic (Wikipedia lists or Oxfam emissions data) and do not provide independent corroboration of this specific income figure.

While the World Inequality Database (WID) is mentioned as a source in the search results, the specific range (1.6% in Netherlands to 10.2% in Georgia) is not present in the provided evidence snippets.

The provided evidence includes general Wikipedia lists and EU member state information, but does not contain the specific income share percentages for Estonia (8.3%), Bulgaria (7.5%), or Poland (7%).

The evidence mentions that some countries are above 6%, but the specific figures for Serbia (6.9%) and Turkey (6.1%) are not found in the provided snippets.

The evidence contains general information about Denmark and Romania's economy/happiness, but does not list the specific income shares of the richest 0.1% (5.8% and 5.1%).

One search result mentions a PDF titled 'Tax System in Poland – Progressive or Regressive?', but the snippet does not provide the conclusion or the data to verify if the system is indeed regressive.

The provided evidence contains general definitions of income and tax department links, but no data regarding the income shares of the richest 0.1% for Spain, Germany, the UK, or France.

The evidence mentions Ireland's GDP per capita, but does not provide the income share of the richest 0.1% (4.8%).