date	settle	CPI			date	Natural Gas / CPI
12/31/1930	0.080	16.1			12/31/1930	0.0049689
12/31/1931	0.070	14.6			12/31/1931	0.0047945
12/30/1932	0.060	13.1			12/30/1932	0.0045802
12/29/1933	0.060	13.2			12/29/1933	0.0045455
12/31/1934	0.060	13.4			12/31/1934	0.0044776
12/31/1935	0.060	13.8			12/31/1935	0.0043478
12/31/1936	0.060	14			12/31/1936	0.0042857
12/31/1937	0.050	14.4			12/31/1937	0.0034722
12/30/1938	0.050	14			12/30/1938	0.0035714
12/29/1939	0.050	14			12/29/1939	0.0035714
12/31/1940	0.050	14.1			12/31/1940	0.0035461
12/31/1941	0.050	15.5			12/31/1941	0.0032258
12/31/1942	0.050	16.9			12/31/1942	0.0029586
12/31/1943	0.050	17.4			12/31/1943	0.0028736
12/29/1944	0.050	17.8			12/29/1944	0.002809
12/31/1945	0.050	18.2			12/31/1945	0.0027473
12/31/1946	0.050	21.5			12/31/1946	0.0023256
12/31/1947	0.060	23.4			12/31/1947	0.0025641
12/31/1948	0.060	24.1			12/31/1948	0.0024896
12/30/1949	0.060	23.6			12/30/1949	0.0025424
12/29/1950	0.070	25			12/29/1950	0.0028
12/31/1951	0.070	26.5			12/31/1951	0.0026415
12/31/1952	0.080	26.7			12/31/1952	0.0029963
12/31/1953	0.090	26.9			12/31/1953	0.0033457
12/31/1954	0.100	26.7			12/31/1954	0.0037453
12/30/1955	0.100	26.8			12/30/1955	0.0037313
12/31/1956	0.110	27.6			12/31/1956	0.0039855
12/31/1957	0.110	28.4			12/31/1957	0.0038732
12/31/1958	0.120	28.9			12/31/1958	0.0041522
12/31/1959	0.130	29.4			12/31/1959	0.0044218
12/30/1960	0.140	29.8			12/30/1960	0.004698
12/29/1961	0.150	30			12/29/1961	0.005
12/31/1962	0.160	30.4			12/31/1962	0.0052632
12/31/1963	0.160	30.9			12/31/1963	0.005178
12/31/1964	0.150	31.2			12/31/1964	0.0048077
12/31/1965	0.160	31.8			12/31/1965	0.0050314
12/30/1966	0.160	32.9			12/30/1966	0.0048632
12/29/1967	0.160	33.9			12/29/1967	0.0047198
12/31/1968	0.160	35.5			12/31/1968	0.004507
12/31/1969	0.170	37.7			12/31/1969	0.0045093
12/31/1970	0.170	39.8			12/31/1970	0.0042714
12/31/1971	0.180	41.1			12/31/1971	0.0043796
12/29/1972	0.190	42.5			12/29/1972	0.0044706
12/31/1973	0.220	46.2			12/31/1973	0.0047619
12/31/1974	0.300	51.9			12/31/1974	0.0057803
12/31/1975	0.440	55.5			12/31/1975	0.0079279
12/31/1976	0.640	58.2			12/31/1976	0.0109966
12/30/1977	0.840	62.1			12/30/1977	0.0135266
12/29/1978	0.960	67.7			12/29/1978	0.0141802
12/31/1979	1.310	76.7			12/31/1979	0.0170795
12/31/1980	1.740	86.3			12/31/1980	0.0201622
12/31/1981	2.160	94			12/31/1981	0.0229787
11/30/1982	2.620	97.6			11/30/1982	0.0268443
12/30/1983	2.610	101.3			12/30/1983	0.0257651
11/30/1984	2.610	105.3			11/30/1984	0.0247863
12/31/1985	2.260	109.3			12/31/1985	0.020677
12/31/1986	1.760	110.5			12/31/1986	0.0159276
12/31/1987	1.700	115.4			12/31/1987	0.0147314
12/30/1988	1.890	120.5			12/30/1988	0.0156846
12/29/1989	1.920	126.1			12/29/1989	0.015226
12/31/1990	2.040	133.8			12/31/1990	0.0152466
12/31/1991	2.000	137.9			12/31/1991	0.0145033
12/31/1992	2.070	141.9			12/31/1992	0.0145877
12/30/1993	2.080	145.8			12/30/1993	0.0142661
12/30/1994	1.705	149.7			12/30/1994	0.0113894
12/29/1995	2.750	153.5			12/29/1995	0.0179153
12/31/1996	4.050	158.6			12/31/1996	0.0255359
12/31/1997	2.265	161.3			12/31/1997	0.0140422
12/31/1998	1.935	163.9			12/31/1998	0.011806
12/30/1999	2.305	168.3			12/30/1999	0.0136958
12/29/2000	10.415	174			12/29/2000	0.0598563
12/31/2001	2.720	176.7			12/31/2001	0.0153933
12/31/2002	4.585	180.9			12/31/2002	0.0253455
6/6/2003	6.255	183.8			6/6/2003	0.0340316