年份	国家电网公司	华北区域电网	东北区域电网	华东区域电网	华中区域电网	西北区域电网
2005	99.763	99.802	99.851	99.836	99.597	99.684
2006	99.839	99.848	99.845	99.902	99.817	99.720
2007	99.881	99.890	99.870	99.926	99.853	99.769
2008	99.867	99.905	99.889	99.929	99.744	99.805
2009	99.903	99.937	99.910	99.937	99.900	99.833
2010	99.933	99.950	99.915	99.948	99.929	99.870
2011	99.921	99.957	99.925	99.957	99.940	99.905
2012	99.956	99.966	99.936	99.973	99.946	99.921