1992

7.3

2001

5.1

2007

6.6

2024

7.0

2015

7.2

2007

6.4

1991

7.3

1986

6.0

1964

6.4

1965

4.8

1971

6.2

1998

6.2

2004

5.8

1994

6.2

1953

5.9

2017

7.0

1925

8.0

2006

7.2

2003

5.5

2006

7.0