Year	Biodiesel	Ethanol	Electric	LPG	NG	Plug-in hybrids	All alternative fuel cars
2000	0.0	0.0	0.0	0.0	0.1	0.0	13.5
2001	0.0	0.0	0.0	1.8	0.1	0.0	14.8
2002	0.0	0.0	0.0	4.9	4.3	0.0	15.9
2003	0.0	0.0	0.1	2.3	13.1	0.0	15.5
2004	0.0	0.0	0.1	3.3	19.9	0.0	23.3
2005	0.0	0.0	0.0	11.6	25.5	0.0	37.0
2006	0.0	0.0	0.0	34.8	14.4	0.0	49.2
2007	0.0	0.0	0.0	89.9	21.7	0.0	111.6
2008	0.0	0.0	0.0	161.5	22.9	0.0	184.5
2009	0.0	1.2	0.2	498.0	17.9	0.0	517.3
2010	0.1	13.2	7.0	359.3	78.6	0.0	458.1
2011	0.1	25.6	5.9	85.4	51.8	0.0	168.8
2012	0.0	21.6	15.4	162.2	65.3	0.0	264.5
2013	0.0	4.4	24.2	130.5	81.6	31.1	271.7
2014	0.0	3.3	38.0	142.7	91.3	68.5	343.8
2015	0.0	1.7	56.8	138.1	71.4	126.9	394.9