2020 | 3.55 | |
2008 | 3.72 | |
2018 | 3.56 | |
2010 | 3.94 | |
2018 | 3.65 | |
2001 | 3.93 | |
2019 | 3.39 | |
2017 | 2.67 | |
2012 | 3.9 | |
1986 | 4.08 | |
1924 | 3.67 | |
2005 | 4.5 | |
2018 | 3.2 | |
2018 | 3.65 | |
1976 | 3.22 | |
2000 | 3.82 | |
2018 | 4.33 | |
5 | ||
2019 | 3 | |
2019 | 3.67 | |
2007 | 4.18 | |
2014 | 5 | |
2017 | 4.5 | |
2017 | 3.36 | |
2018 | 3.39 | |
2017 | 4.15 | |
1962 | 4.02 | |
2018 | 2.91 | |
4.25 | ||
2017 | 4.2 | |
1983 | 3.93 | |
2009 | 3.71 | |
1972 | 3 | |
2018 | 4.17 | |
2008 | 3.82 | |
2015 | 2.6 | |
2013 | 3.56 | |
2015 | 3.38 | |
2019 | 2.99 | |
1972 | 3.89 | |
2017 | 0 | |
2019 | 3.8 | |
2015 | 3.72 | |
10 | 4.38 | |
1979 | 3.77 | |
2017 | 3.56 | |
2016 | 3.8 | |
2013 | 3.81 | |
2011 | 3.09 | |
2019 | 3.84 | |
2018 | 3 | |
2015 | 3.67 | |
2018 | 4.26 | |
2016 | 4.13 | |
2018 | 3.87 | |
2019 | 2.68 | |
2013 | 4.09 | |
2016 | 4.04 | |
2018 | 3.81 | |
2010 | 3 | |
2008 | 3.1 | |
1991 | 3.46 | |
2016 | 0 | |
2009 | 3.75 | |
2005 | 3.5 | |
1999 | 3.29 | |
1998 | 3.74 | |
2017 | 3.25 | |
0 | ||
2017 | 3.31 | |
2017 | 0 | |
2011 | 3.5 | |
2011 | 2.33 | |
1913 | 4 | |
2014 | 3.56 | |
2017 | 3.44 | |
1992 | 3 | |
1982 | 2.5 | |
1995 | 3.71 | |
1995 | 4 | |
1987 | 4.05 | |
2015 | 3.7 | |
2001 | 3.74 | |
2002 | 4.11 | |
2018 | 4 | |
2014 | 3.66 | |
1996 | 4 | |
1994 | 0 | |
2011 | 4.15 | |
2012 | 3.5 | |
1988 | 3.86 | |
2015 | 3.9 | |
Turning Oil Into Salt Turning Oil Into Salt: Energy Independence Through Fuel Choice
| 2009 | 0 |
2004 | 0 | |
1973 | 4.4 | |
2010 | 3.25 | |
2018 | 3.78 | |
2013 | 3.69 | |
5 | ||
21 | 4.18 |