| $18 in Year | Value in 2026 |
| $18 in 1914 | $583.30 |
| $18 in 1915 | $577.52 |
| $18 in 1916 | $566.31 |
| $18 in 1917 | $502.84 |
| $18 in 1918 | $425.76 |
| $18 in 1919 | $353.51 |
| $18 in 1920 | $308.62 |
| $18 in 1921 | $300.67 |
| $18 in 1922 | $337.17 |
| $18 in 1923 | $345.15 |
| $18 in 1924 | $337.17 |
| $18 in 1925 | $337.17 |
| $18 in 1926 | $325.86 |
| $18 in 1927 | $329.55 |
| $18 in 1928 | $337.17 |
| $18 in 1929 | $341.11 |
| $18 in 1930 | $339.13 |
| $18 in 1931 | $362.30 |
| $18 in 1932 | $399.52 |
| $18 in 1933 | $445.27 |
| $18 in 1934 | $441.89 |
| $18 in 1935 | $435.30 |
| $18 in 1936 | $422.68 |
| $18 in 1937 | $416.64 |
| $18 in 1938 | $405.07 |
| $18 in 1939 | $416.64 |
| $18 in 1940 | $416.64 |
| $18 in 1941 | $413.69 |
| $18 in 1942 | $376.32 |
| $18 in 1943 | $345.15 |
| $18 in 1944 | $335.23 |
| $18 in 1945 | $327.70 |
| $18 in 1946 | $320.49 |
| $18 in 1947 | $271.30 |
| $18 in 1948 | $249.27 |
| $18 in 1949 | $242.03 |
| $18 in 1950 | $247.16 |
| $18 in 1951 | $233.32 |
| $18 in Year | Value in 2026 |
| $18 in 1952 | $220.11 |
| $18 in 1953 | $218.46 |
| $18 in 1954 | $216.84 |
| $18 in 1955 | $218.46 |
| $18 in 1956 | $217.65 |
| $18 in 1957 | $211.34 |
| $18 in 1958 | $205.39 |
| $18 in 1959 | $201.83 |
| $18 in 1960 | $198.40 |
| $18 in 1961 | $195.74 |
| $18 in 1962 | $194.43 |
| $18 in 1963 | $191.87 |
| $18 in 1964 | $188.77 |
| $18 in 1965 | $186.95 |
| $18 in 1966 | $183.43 |
| $18 in 1967 | $177.29 |
| $18 in 1968 | $172.06 |
| $18 in 1969 | $164.31 |
| $18 in 1970 | $154.72 |
| $18 in 1971 | $146.56 |
| $18 in 1972 | $141.92 |
| $18 in 1973 | $137.25 |
| $18 in 1974 | $126.25 |
| $18 in 1975 | $112.39 |
| $18 in 1976 | $105.10 |
| $18 in 1977 | $100.22 |
| $18 in 1978 | $93.93 |
| $18 in 1979 | $86.16 |
| $18 in 1980 | $76.05 |
| $18 in 1981 | $67.59 |
| $18 in 1982 | $62.05 |
| $18 in 1983 | $59.76 |
| $18 in 1984 | $57.58 |
| $18 in 1985 | $55.39 |
| $18 in 1986 | $53.37 |
| $18 in 1987 | $52.79 |
| $18 in 1988 | $50.55 |
| $18 in 1989 | $48.41 |
| $18 in Year | Value in 2026 |
| $18 in 1990 | $46.26 |
| $18 in 1991 | $43.59 |
| $18 in 1992 | $42.30 |
| $18 in 1993 | $41.11 |
| $18 in 1994 | $40.01 |
| $18 in 1995 | $38.96 |
| $18 in 1996 | $38.00 |
| $18 in 1997 | $36.78 |
| $18 in 1998 | $36.16 |
| $18 in 1999 | $35.59 |
| $18 in 2000 | $34.66 |
| $18 in 2001 | $33.52 |
| $18 in 2002 | $33.01 |
| $18 in 2003 | $32.24 |
| $18 in 2004 | $31.65 |
| $18 in 2005 | $30.65 |
| $18 in 2006 | $29.64 |
| $18 in 2007 | $28.90 |
| $18 in 2008 | $27.77 |
| $18 in 2009 | $27.75 |
| $18 in 2010 | $27.01 |
| $18 in 2011 | $26.61 |
| $18 in 2012 | $25.85 |
| $18 in 2013 | $25.40 |
| $18 in 2014 | $25.03 |
| $18 in 2015 | $24.84 |
| $18 in 2016 | $24.66 |
| $18 in 2017 | $24.16 |
| $18 in 2018 | $23.66 |
| $18 in 2019 | $23.22 |
| $18 in 2020 | $22.70 |
| $18 in 2021 | $22.39 |
| $18 in 2022 | $20.92 |
| $18 in 2023 | $19.65 |
| $18 in 2024 | $19.02 |
| $18 in 2025 | $18.48 |
| $18 in 2026 | $18.00 |