year	first class postage rate, cents (current)	first class postage rate, cents (2022 $)	CPI
1866	3	56.0	15.4
1867	3	60.1	14.3
1868	3	62.5	13.8
1869	3	65.2	13.2
1870	3	68.1	12.6
1871	3	72.8	11.8
1872	3	72.8	11.8
1873	3	74.3	11.6
1874	3	78.0	11.0
1875	3	81.0	10.6
1876	3	82.9	10.4
1877	3	84.9	10.1
1878	3	89.1	9.7
1879	3	89.1	9.7
1880	3	86.9	9.9
1881	3	86.9	9.9
1882	3	86.9	9.9
1883	2	59.2	9.7
1884	2	60.4	9.5
1885	2	61.6	9.3
1886	2	63.0	9.1
1887	2	62.3	9.2
1888	2	62.3	9.2
1889	2	64.4	8.9
1890	2	65.1	8.8
1891	2	65.1	8.8
1892	2	65.1	8.8
1893	2	65.9	8.7
1894	2	68.9	8.3
1895	2	70.6	8.1
1896	2	70.6	8.1
1897	2	71.4	8.0
1898	2	71.4	8.0
1899	2	71.4	8.0
1900	2	70.6	8.1
1901	2	69.7	8.2
1902	2	68.9	8.3
1903	2	67.3	8.5
1904	2	66.6	8.6
1905	2	67.3	8.5
1906	2	65.9	8.7
1907	2	63.1	9.1
1908	2	64.4	8.9
1909	2	65.1	8.8
1910	2	62.4	9.2
1911	2	62.4	9.2
1912	2	59.8	9.6
1913	2	57.9	9.9
1914	2	57.4	10.0
1915	2	56.8	10.1
1916	2	53.1	10.9
1917	2	44.8	12.8
1918	3	57.0	15.0
1919	2	33.0	17.3
1920	2	27.6	20.0
1921	2	32.4	17.9
1922	2	34.1	16.8
1923	2	33.3	17.1
1924	2	33.5	17.1
1925	2	32.4	17.5
1926	2	32.8	17.7
1927	2	33.2	17.4
1928	2	33.5	17.2
1929	2	33.2	17.2
1930	2	34.5	16.7
1931	2	38.0	15.2
1932	3	63.3	13.6
1933	3	65.7	12.9
1934	3	64.2	13.4
1935	3	62.8	13.7
1936	3	61.9	13.9
1937	3	59.3	14.4
1938	3	61.0	14.1
1939	3	62.3	13.9
1940	3	61.4	14.0
1941	3	58.5	14.7
1942	3	52.5	16.3
1943	3	49.4	17.3
1944	3	48.6	17.6
1945	3	47.5	18.0
1946	3	43.4	19.5
1947	3	38.8	22.3
1948	3	35.3	24.0
1949	3	36.3	23.8
1950	3	35.7	24.1
1951	3	33.2	26.0
1952	3	32.2	26.6
1953	3	32.1	26.8
1954	3	32.0	26.9
1955	3	32.1	26.8
1956	3	31.4	27.2
1957	3	30.4	28.1
1958	3	29.7	28.9
1959	4	39.3	29.2
1960	4	38.8	29.6
1961	4	38.2	29.9
1962	4	37.9	30.3
1963	5	46.7	30.6
1964	5	46.1	31.0
1965	5	45.4	31.5
1966	5	44.1	32.5
1967	5	42.9	33.4
1968	6	49.3	34.8
1969	6	46.8	36.7
1970	6	44.1	38.8
1971	8	56.4	40.5
1972	8	54.8	41.8
1973	8	51.8	44.4
1974	10	58.0	49.3
1975	10	52.9	53.8
1976	13	65.3	56.9
1977	13	61.1	60.6
1978	15	65.5	65.2
1979	15	58.8	72.6
1980	15	52.0	82.4
1981	18	56.3	90.9
1982	20	58.8	96.5
1983	20	57.4	99.6
1984	20	55.1	103.9
1985	22	58.5	107.6
1986	22	57.6	109.6
1987	22	55.4	113.6
1988	25	60.5	118.3
1989	25	57.6	124.0
1990	25	55.0	130.7
1991	29	61.1	136.2
1992	29	59.2	140.3
1993	29	57.6	144.5
1994	29	56.0	148.2
1995	32	60.2	152.4
1996	32	58.4	156.9
1997	32	57.2	160.5
1998	32	56.2	163.0
1999	33	56.8	166.6
2000	33	54.8	172.2
2001	34	54.9	177.1
2002	37	58.9	179.9
2003	37	57.7	184.0
2004	37	56.0	188.9
2005	37	54.3	195.3
2006	39	55.0	201.6
2007	41	56.4	207.3
2008	42	54.8	215.3
2009	44	58.6	214.5
2010	44	57.9	218.1
2011	44	55.8	224.9
2012	45	56.3	229.6
2013	46	56.5	233.0
2014	49	59.0	236.7
2015	49	58.9	237.0
2016	47	56.0	240.0
2017	49	57.4	245.1
2018	50	56.9	251.1
2019	55	61.5	255.7
2020	55	60.9	258.8
2021	55	57.8	271.0
2022 May	58	56.9	286.8