19970.92 19980.92 19990.47 20000.31 20010.31 20020.35 20030.3 20040.41 20050.36 20060.4 20070.28 20080.27 20090.29 20100.29 20110.27 20120.48 20130.35 20140.39 20150.46 20160.34 20170.43 20180.44 20190.42 20200.7 20210.34 20220.33 20230.42 20240.39 20250.42