2.5 1.8 3.1 2.4 3.5 2.9 3.8 3.4 4.2 3.8 5.2 4.6 4.9 4.8 5.5 4.3 5.6 5.2 6 5.5 6.3 6.1 6.5 6.2 6.7 6.6 7.1 6.8 7.3 6.9