Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Year | Song | Chart Positions\nUS Country | Chart Positions\nCAN Country | Album |
| --- | --- | --- | --- | --- |
| 1968 | "God Help You Woman" | 32 | 24 | singles only |
| 1969 | "Please Take Me Back" | 40 | — | singles only |
| 1969 | "I'm Not Through Loving You" | 52 | — | singles only |
| 1969 | "Molly" | 53 | — | singles only |
| 1973 | "I See His Love All Over You" | 67 | — | singles only |
| 1974 | "Fool Passin' Through" | 68 | — | singles only |
| 1974 | "Forgettin' 'Bout You" | 51 | — | singles only |
| 1975 | "One, Two, Three (Never Gonna Fall in Love Again)" | 88 | — | singles only |
| 1975 | "Woman, Woman" | 43 | 46 | singles only |
| 1976 | "She's Free But She's Not Easy" | 66 | — | singles only |
| 1977 | "Chasin' My Tail" | 88 | — | singles only |
| 1977 | "Don't Let My Love Stand in Your Way" | 86 | — | singles only |
| 1983 | "When You're Not a Lady" | 16 | — | The Man in the Mirror |
| 1983 | "You Got Me Running" | 28 | — | The Man in the Mirror |
| 1983 | "The Man in the Mirror" | 17 | — | The Man in the Mirror |
| 1984 | "If I Could Only Dance with You" | 10 | 10 | The Man in the Mirror |
| 1984 | "You're Gettin' to Me Again" | 1 | 3 | The Man in the Mirror |
| 1984 | "Let Me Down Easy" | 16 | 33 | The Man in the Mirror |
| 1985 | "I'll Be Your Fool Tonight" | 54 | — | Past the Point of No Return |
| 1985 | "In Another Minute" | 27 | — | Past the Point of No Return |
| 1986 | "If I Don't Love You" | 53 | — | Past the Point of No Return |
| 1986 | "The Lights of Albuquerque" | 40 | — | Everybody Knows I'm Yours |
Question:
what was the biggest difference in years between album release dates?
Answer:
6