1990

7.4

1968

6.9

1984

6.6

1969

6.6

1982

5.8

2017

6.0

1989

5.7

2017

6.9

1969

7.9

2020

6.4

2005

7.9

2018

5.0

1996

7.8

2015

5.1

2001

6.4

1957

7.0

1965

6.7

1987

6.4

2007

7.0