You will find more statistics at Statista
Among all regions, Europe is by far the worst for Apple, as the chart shows. Surprisingly even Windows Phone is getting close to iOS market share in Europe.
The reason is quite simple:
The price for the lowest spec iPad in US is $499 while in Spain is 499 Euro. For years Apple has maintained a pricing policy where prices for their products in Europe follow the 1 Euro = 1 USD rule. At today’s exchange rate, an iPad costs 36% more in Europe than in the US.
We all know the Apple target client is not price sensitive, but in a Europe in recession with an impoverishing middle class (specially in southern countries) it is not a surprise that Samsung and Android are doing pretty well.
If Apple wants their market share in Europe to resemble US, they’d better change their pricing policy in Europe. Otherwise they risk to be beaten by (shame on you Apple) Windows Phone!