Province | A2008 | A2009 | A2010 | A2011 | A2011 − A2010 | P values |
---|---|---|---|---|---|---|
Hubei | — | — | 33.27 | 43.23 | 9.96 | 0.024 |
Liaoning | — | — | 27.19 | 40.32 | 13.13 | 0.001 |
Shandong | — | — | 19.36 | 35.36 | 16.00 | 0.000 |
Shanxi | — | — | 34.00 | 35.23 | 1.23 | 0.269 |
Shaanxi | — | — | 48.80 | 53.40 | 4.60 | 0.218 |
Sichuan | — | — | 29.50 | 32.15 | 2.65 | 0.262 |
Average | 18.2 | 19.3 | 29.86 | 38.84 | 8.98 | 0.000 |
P values | — | — | 0.000 | 0.074 | — | — |