Percent 11 10 9 8 7 6 Unemployment rate Cowen/Tabarrok, Modern Principles of Economics, 5e 0 2021 Worth Publishers 543 2 Natural rate of unemployment 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 Refer to the figure to determine how the natural unemployment rate changes over time. Year According to the figure, during which period was the natural unemployment rate the highest? 1995 to 2004 1975 to 1984 1965 to 1974 1985 to 1994