1995

7.6

2017

4.7

1966

8.5

2009

6.1

1981

7.1

1991

7.6

2019

6.0

1991

8.1

1968

8.3

1971

7.7

1964

7.8

2000

6.3

1973

5.7

2005

6.1

1984

8.1

1962

7.9

1990

7.5

2021

4.0

2019

5.0

1972

3.3