CPI-U and Experimental CPI-U-XG show different trends, 1990-98 Month/Year CPI-U-XG CPI-U Dec.1990 100.0 100.0 100.5 100.6 100.6 100.7 100.6 100.9 100.7 101.0 100.9 101.3 101.1 101.6 101.2 101.8 101.4 102.1 101.9 102.5 102.0 102.7 102.2 103.0 Dec. 1991 102.3 103.1 102.4 103.2 102.7 103.6 103.1 104.1 103.3 104.3 103.5 104.4 103.7 104.8 103.8 105.0 104.0 105.3 104.4 105.6 104.7 106.0 104.8 106.1 Dec. 1992 104.8 106.1 105.1 106.6 105.4 107.0 105.8 107.3 106.1 107.6 106.3 107.8 106.4 107.9 106.4 107.9 106.7 108.2 106.8 108.4 107.1 108.9 107.2 109.0 Dec. 1993 107.2 109.0 107.3 109.3 107.6 109.6 108.0 110.0 108.1 110.2 108.3 110.2 108.6 110.6 108.8 110.9 109.2 111.4 109.4 111.7 109.5 111.7 109.6 111.9 Dec. 1994 109.6 111.9 110.0 112.3 110.4 112.8 110.7 113.2 111.1 113.5 111.3 113.8 111.5 114.0 111.6 114.0 111.8 114.3 112.0 114.5 112.3 114.9 112.2 114.8 Dec. 1995 112.2 114.7 112.7 115.4 113.1 115.8 113.6 116.4 114.0 116.8 114.3 117.0 114.3 117.1 114.5 117.3 114.6 117.6 115.0 117.9 115.3 118.3 115.5 118.5 Dec. 1996 115.5 118.5 115.9 118.9 116.2 119.3 116.4 119.6 116.5 119.7 116.5 119.7 116.6 119.8 116.7 120.0 116.9 120.2 117.3 120.5 117.5 120.8 117.4 120.7 Dec. 1997 117.2 120.6 117.4 120.8 117.6 121.0 117.8 121.2 118.0 121.4 118.2 121.7 118.3 121.8 118.4 122.0 118.6 122.1 118.7 122.3 118.9 122.6 118.9 122.6 Dec. 1998 118.8 122.5