Year
|
Biodiesel
|
Ethanol
|
Electric
|
Liquefied petroleum gas
|
Natural gas
|
Plug-in hybrids
|
All alternative fuel cars
|
2000
|
0
|
0
|
0
|
0
|
0.1
|
0
|
13.5
|
2001
|
0
|
0
|
0
|
1.8
|
0.1
|
0
|
14.8
|
2002
|
0
|
0
|
0
|
4.9
|
4.3
|
0
|
15.9
|
2003
|
0
|
0
|
0.1
|
2.3
|
13.1
|
0
|
15.5
|
2004
|
0
|
0
|
0.1
|
3.3
|
19.9
|
0
|
23.3
|
2005
|
0
|
0
|
0
|
11.6
|
25.5
|
0
|
37
|
2006
|
0
|
0
|
0
|
34.8
|
14.4
|
0
|
49.2
|
2007
|
0
|
0
|
0
|
89.9
|
21.7
|
0
|
111.6
|
2008
|
0
|
0
|
0
|
161.5
|
22.9
|
0
|
184.5
|
2009
|
0
|
1.2
|
0.2
|
498
|
12.9
|
0
|
512.2
|
2010
|
0.1
|
13.2
|
7
|
359.3
|
78.6
|
0
|
458.1
|
2011
|
0.1
|
28.4
|
8.7
|
85.5
|
52.3
|
0
|
174
|
2012
|
0
|
22.1
|
14
|
161.3
|
65.5
|
0
|
262.9
|
2013
|
0
|
4.5
|
24.2
|
130.5
|
81.6
|
31.2
|
271.9
|
2014
|
0
|
3.3
|
37.9
|
142.5
|
90.4
|
68.1
|
342.2
|
2015
|
0
|
1.7
|
56.8
|
138.1
|
78.3
|
103.6
|
378.4
|
2016
|
0.2
|
1.9
|
64.3
|
253
|
57.3
|
93.7
|
470.3
|