trace préval 101.7 98.1 93.1 108.6 103.7 110.3 117.7 131.1 141.3 146.2 164.1 166 165.7 162.9 162.8 161.8 163 162.8 163.9 162.3 160 160.4 159 155.5 148.8 148.5 136.1 130.8 131.6 136.4 137.6