Historical dynamics of parameters of age-related mortality of Finnish men and women for the period 1952 to 2000 is studied. The Gompertz equation is found to describe age-related mortality of men quite exactly during the historical interval 1952 to 1989. From 1990 to 2000 for men and during the entire interval for women the Gompertz-Makeham equation is more exact. The constant component of mortality is found to be increasing since 1990 for men and since 1980 for women. The presence of the Strehler-Mildvan correlation is shown. There are 3 evidently separated periods: 1) from 1952 to 1971, 2) from 1972 to 1980, 3) from 1981 to 2000. The correlation has the highest value in the 1st and 3rd periods. During the 2nd, transitional, period the correlation value is minimal. An opinion is expressed that it's not correct to treat the incline coefficient of correlation dependence as a specific lifespan since it takes on different values even for a single country, though the values are stable during certain historical periods.
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