201301 6.619615521 201302 0.423879471 201303 14.78585283 201304 0.255644768 201305 -0.625289321 201306 -2.496084213 201307 4.070181139 201308 -2.226169942 201309 10.69252037 201310 -2.899848875 201311 -0.338668878 201312 3.554238774 31.81587164