Bahrain, New Zealand and Singapore lead the list.
http://www.telegraph.co.uk/finance/personalfinance/expat-money/11675986/Retiring-overseas-a-checklist-before-heading-for-your-dream-home.html?WT.mc_id=e_DM28011&WT.tsrc=email&etype=Edi_Exp_New_Man&utm_source=email&utm_medium=Edi_Exp_New_Man_2015_06_30&utm_campaign=DM28011
http://www.telegraph.co.uk/finance/personalfinance/expat-money/11675986/Retiring-overseas-a-checklist-before-heading-for-your-dream-home.html?WT.mc_id=e_DM28011&WT.tsrc=email&etype=Edi_Exp_New_Man&utm_source=email&utm_medium=Edi_Exp_New_Man_2015_06_30&utm_campaign=DM28011