1990

4.4

1998

7.4

1982

6.9

2019

7.2

1993

4.9

1985

6.2

1992

6.7

1973

6.9

2017

7.3

2004

10.0

2010

6.6

2017

5.5

2008

7.7

1943

7.6

1984

6.8

1968

6.0

1972

7.1

1987

7.3

2020

6.2