The National Parks Project

6.3

/

2006

7.548

/

2013

5.9

/

2014

6.5

/

2008

7.2

/

2003

6.6

/

2009

6.9

/

1935

7

/

2005

5.2

/

1980

6

/

2023

6.5

/

2009

5.6

/

2006

7

/

2008

6.4

/

2022

6.9

/

2009

6.5

/

2013

5.3

/

2017

7.1

/

2009

8.4

/

2017

7

/

2009

6.653

/

2008

6.964

/

1985

7.4

/

2020

6.841

/

2023

6.644

/

2011

6.6

/

2024

7.4

/

2022

6.9

/

1968

6.949

/

2012

5.365

/

NaN

6.519

/

1993

6.5

/

2024

5.4

/

2023

7.1

/

NaN

6.6

/

1969

6.887

/

2024

5.1

/

2022

7

/

2021

6.158

/

1985

7.4

/

2024