Complex sentence: According to newly revised statistics, Denmark had the world's highest tax level in 2005 and 2006, at 50.7% and 49.1% respectively and also held this position 1970-74 and 1993-95.
Split into simpler sentences: According to newly revised statistics, Denmark has had the world's highest tax level in 2005 and 2006, at 50.7% and 49.1% respectively. Denmark also held this position 1970-74 and 1993-95.