Year | Lower than 10 mg/m³.h | 10 – 20 mg/m³.h | 20 – 30 mg/m³.h | 30 – 50 mg/m³.h | Greater than 50 mg/m³.h |
---|---|---|---|---|---|
2001 | |||||
2002 | |||||
2003 | |||||
2004 | 2.03 | 49.34 | 20.13 | 21.31 | 7.19 |
2005 | 24.69 | 18.01 | 18.92 | 28.73 | 9.65 |
2006 | 0.2 | 31.75 | 17.99 | 39.81 | 10.24 |
2007 | 40.32 | 14.65 | 13.59 | 24.53 | 6.92 |
2008 | 21.74 | 31.23 | 21.48 | 25.06 | 0.5 |
2009 | 34.71 | 19.33 | 18.39 | 24.22 | 3.35 |
2010 | 38.9 | 15.08 | 25.06 | 18.99 | 1.97 |
2011 | 33.39 | 16.56 | 26.08 | 21.05 | 2.92 |