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YearJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
19976.35.05.45.88.06.57.48.09.18.69.49.4
19987.47.58.69.35.66.35.33.73.3-0.2-1.7-1.8
1999-1.7-2.8-3.1-5.2-3.7-1.8-2.3-0.90.93.66.25.9
20006.36.06.57.26.84.46.25.84.34.43.33.2
20012.73.74.53.63.75.82.92.93.02.82.61.6
20022.80.71.03.12.12.53.83.74.64.33.94.6
20034.25.24.43.94.64.34.43.63.93.83.43.5
20043.94.66.26.16.36.57.68.68.49.09.49.5
20057.46.35.36.35.36.24.06.35.34.15.96.6
20065.77.45.45.57.77.06.54.96.77.85.75.8
20075.44.86.95.95.45.33.14.65.33.64.34.5
20085.46.74.24.74.34.96.42.11.82.8-0.40.3
2009-2.1-4.5-1.9-2.9-3.5-4.0-3.50.50.1-1.12.81.2
20102.23.7-0.16.06.26.97.88.36.66.48.67.5
20118.16.712.56.07.85.53.94.44.44.53.86.1
20125.06.34.25.25.26.26.46.54.06.75.43.3
20135.02.93.14.83.64.05.23.54.63.84.43.7
20142.13.33.01.42.01.10.40.22.51.81.02.4
20152.72.02.02.91.52.92.41.82.61.62.62.5
20161.54.53.00.72.01.21.03.11.4-0.31.60.8
20171.1-2.0-0.3-0.71.20.72.12.21.73.23.22.6
20184.34.85.16.54.84.53.02.72.14.43.33.1
20191.91.01.71.92.21.73.43.63.0-3.4