평 균 | Std. Deviation | Std. Error | 95% Confidence Interval for Mean |
Min | Max | ||
---|---|---|---|---|---|---|---|
Lower Bound | Upper Bound | ||||||
2004 | 5.19 | 2.18 | 1.26 | (0.24) | 10.62 | 3.92 | 7.71 |
2005 | 9.35 | 6.8 | 1.6 | 5.96 | 12.73 | 2.52 | 27.53 |
2006 | 7.99 | 8.33 | 1.52 | 5.5 | 11.73 | 1.7 | 39.18 |
2007 | 7.47 | 4.72 | 0.82 | 5.79 | 9.14 | 1.89 | 22.03 |
2008 | 10.95 | 9.98 | 1.17 | 10.12 | 14.77 | 1.79 | 39.29 |
2009 | 9.99 | 8.29 | 1.06 | 8.46 | 12.71 | 1.98 | 40.92 |
2010 | 9.79 | 5.44 | 0.71 | 8.36 | 11.22 | 2.45 | 26.3 |
Total | 9.57 | 7.91 | 0.47 | 9.23 | 11.09 | 1.7 | 40.92 |