1992

6.5

2007

7.9

2018

6.7

2000

6.9

1986

6.8

1994

6.2

1976

7.3

1994

6.6

2015

7.3

1973

7.6

1892

4.7

1892

3.7

2008

7.3

2005

6.4

2006

6.3

2016

6.7

2019

6.7

1989

6.3

2024

6.6

1967

6.4