he78
Any economic index, regardless of its source, will show that freer trade shows more economic growth. Singapore surpasses Ireland in terms of economic growth; also, Ireland adopted more free market principles to achieve its growth when it started to privatize its industries. All the countries you mention that have high GDP per capita and high GDP growth have high economic freedom scores.
Trying to argue against freer trade for economic growth is like trying to argue with someone who says the Earth isn't round. China, India, Poland, Russia, etc., etc., grew their economies rapidly by moving to privatization and eliminating barriers to trade. Economists across the aisle support free trade; for example, read Paul Krugman's views on free trade in his Wikipedia entry (or research Goolsbee's, Geithnner's, Stglitz's, DeLong's, Sach's, Summers', etc, etc, etc, -- not to mention the plethora of economists' from across the other aisle -- views on free trade's effects on economic growth). This concept is not even debated anymore among the world's leading economists.