The National Parks Project

6.7

/

1992

7

/

2010

6.99

/

2009

6.309

/

2005

5.9

/

2014

7.3

/

2024

5.6

/

2013

8.2

/

2021

8.071

/

NaN

6.868

/

1949

7.1

/

2011

6.433

/

2015

6.128

/

1978

5.7

/

2011

7.122

/

2002

5.579

/

2007

6.867

/

2006

5.822

/

1981

7.254

/

1999

6.419

/

1985

0

/

1993

0

/

1993

6.9

/

2017

0

/

1992

0

/

1992

6.2

/

2017

7.667

/

2017

0

/

2015

6.9

/

2018

7.597

/

2005

5.068

/

2005

8

/

2017

7.2

/

2001

6.5

/

2017

7

/

2007

0

/

2001

5.7

/

2008

4.9

/

2004

5.2

/

1982

6.9

/

2006