年份	effch	techch	pech	sech	g_A	年份	effch	techch	pech	sech	g_A
1996	0.058	0.005	0.042	0.016	0.063	2008	−0.017	−0.020	−0.015	−0.002	−0.037
1997	−0.036	0.007	0.006	−0.042	−0.030	2009	−0.043	0.130	−0.021	−0.022	0.082
1998	0.044	−0.017	0.005	0.039	0.026	2010	0.042	−0.037	0.013	0.028	0.003
1999	0.030	−0.047	0.001	0.028	−0.019	2011	−0.023	0.016	−0.025	0.002	−0.007
2000	−0.019	−0.018	−0.003	−0.016	−0.037	2012	0.019	−0.035	0.032	−0.013	−0.016
2001	0.015	−0.023	0.001	0.014	−0.008	2013	−0.010	0.077	0.003	−0.013	0.067
2002	−0.013	−0.012	−0.002	−0.011	−0.024	2014	−0.009	−0.020	−0.019	0.010	−0.029
2003	−0.010	0.058	−0.034	0.025	0.047	2015	0.014	−0.007	0.024	−0.010	0.007
2004	0.044	−0.008	0.035	0.009	0.036	2016	0.013	0.010	0.012	0.001	0.023
2005	−0.007	−0.004	−0.002	−0.006	−0.011	2017	−0.010	−0.050	−0.013	0.003	−0.060
2006	0.003	−0.017	0.006	−0.003	−0.014	2018	0.024	−0.030	0.010	0.014	−0.007
2007	−0.012	−0.033	−0.003	−0.009	−0.044	均值	0.004	−0.004	0.002	0.002	0.000