JanFebMarAprMayJunJulAugSepOctNovDec
111.93.612.917.2        
27.87.516.110.1        
37.48.112.912.8        
48.59.312.310.1        
57.48.715.714.6        
610.911.912.911.2        
711.811.813.88.9        
812.411.213.514.3        
97.312.915.812.3        
107.58.312.116.8        
1110.312.313.115.6        
1211.212.89.912.7        
1312.712.312.612.1        
1411.416.816.413.8        
159.916.415.716.7        
1610.112.912.720.1        
177.915.812.123.2        
187.111.314.924.4        
195.813.816.626.4        
2010.214.514.128.7        
219.116.716.2         
228.817.912.3         
233.819.516.9         
245.817.919.6         
2512.321.117.3         
2611.121.417.6         
278.821.215.0         
289.413.918.1         
297.220.8         
308.522.5         
318.613.9     
Avg: 9.113.615.0* 16.1        
Hi: 12.721.422.5* 28.7        
Lo: 3.83.69.9* 8.9        
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
20199.113.615.0* 16.1        
201810.28.610.816.823.926.629.925.822.418.812.611.4
20178.911.015.618.321.325.625.324.520.818.212.49.5
201610.210.912.715.621.522.425.926.624.017.611.910.9
20159.69.513.618.920.124.224.923.921.117.514.014.1
201410.411.516.318.920.025.429.024.124.519.213.310.3
20137.47.88.415.518.522.229.226.521.618.311.8* 10.5
201210.710.117.515.720.521.023.325.322.616.312.09.5
20118.511.014.323.121.223.024.624.123.720.014.410.4
2010 9.213.319.020.125.826.623.521.717.210.24.7
Avg9.510.313.8* 17.820.824.026.524.922.518.112.5* 10.2