JanFebMarAprMayJunJulAugSepOctNovDec
19.010.68.414.116.320.620.720.519.718.6  
25.412.012.314.517.418.222.618.319.316.6  
36.99.110.312.713.918.621.620.817.115.6  
47.89.311.115.217.817.121.320.622.216.3  
56.67.610.914.915.614.824.319.720.116.3  
68.58.810.715.716.115.828.620.718.816.6  
711.910.49.914.116.917.922.519.018.817.4  
811.29.114.115.917.417.624.618.818.718.8  
910.75.315.818.214.318.924.518.817.816.2  
109.84.112.914.115.618.220.920.817.018.9  
1111.42.812.415.817.720.617.319.216.816.7  
127.66.812.113.414.618.021.419.717.916.6  
136.112.813.713.817.019.320.920.016.917.8  
149.29.514.414.818.022.020.119.916.917.8  
1510.112.111.313.114.620.722.021.817.417.1  
1610.912.810.915.415.422.223.719.416.318.2  
177.89.911.115.613.525.825.821.916.312.8  
187.111.613.614.316.626.726.119.217.313.3  
197.512.814.613.714.927.423.119.318.115.6  
206.114.912.613.715.829.219.716.917.3   
214.013.411.217.215.925.717.623.716.9   
229.414.19.317.119.719.816.922.117.4   
238.711.610.315.019.221.319.820.418.1   
248.010.811.714.321.521.423.720.718.1   
259.310.915.911.722.122.523.620.720.6   
267.711.215.412.123.920.120.922.617.9   
278.48.715.612.722.620.521.024.516.8   
289.69.914.312.619.616.117.625.617.6   
2911.612.414.318.616.416.921.417.3   
3011.514.912.420.117.819.818.117.4   
3111.314.218.120.819.6  
Avg: 8.710.112.514.417.420.421.620.518.0* 16.7  
Hi: 11.914.915.918.223.929.228.625.622.2* 18.9  
Lo: 4.02.88.411.713.514.816.916.916.3* 12.8  
Note:  *Incomplete dataset.
AvgJanFebMarAprMayJunJulAugSepOctNovDec
20178.710.112.514.417.420.421.620.518.0* 16.7  
201610.29.611.212.817.919.621.722.120.115.210.810.6
20159.98.411.115.215.819.920.619.918.115.313.413.3
20149.99.912.114.116.320.723.320.120.816.312.69.7
20138.17.17.511.515.118.623.822.019.016.410.410.4
201210.18.613.412.117.017.319.420.417.914.310.99.5
20117.410.511.917.416.418.620.019.719.116.913.810.5
20105.47.310.113.916.221.021.220.318.215.110.04.1
20097.18.312.014.217.120.019.720.319.116.012.57.5
200810.610.610.812.818.419.220.219.518.314.311.07.7
2007         * 15.311.99.4
Avg8.89.011.313.816.719.521.220.518.8* 15.611.79.3