Michigan Motor Vehicle & Parts Cos Saw Their Total Pretax Earnings Improve By a Massive $70.2 Bil During the Obama/Biden Administration, Going From Total Pretax Losses of $46.8 Bil in 2008 To Total Pretax Earnings of $23.4 Bil in 2016. On the Other Hand, They Declined By 17% Per Year During the Trump/Pence Administration. Michigan Cos in All Sectors Performed Substantially Better Overall on the Audited Annual Pretax Earnings Growth Front During Obama/Biden's Eight Years in Office (Up an Impressive 24% Per Year) Than They Did During Trump/Pence's First Three Years in Office (Down 9% Per Year).

From a review of SEC filings and Google Finance, there were 34 Michigan Companies with stock market caps of above $1 bil recently and which reported Pretax Income (Loss) From Continuing Operations in their annual financial statement earnings information filed with the SEC for each of the most recent twelve years (Fiscal Years from 2008 to 2019).  Two of these Michigan Companies recorded Reorganization Gains which I excluded from their Pretax Income or Loss.

The table below shows the Pretax Income (Loss) From Continuing Operations for each of these 34 Michigan Companies for fiscal year end 2019, the last year of the Donald Trump/Mike Pence's first three full years in office so far,  for fiscal year end 2016, the year before the start of the Donald Trump/Mike Pence Administration as well as also the last year of the Barack Obama/Joe Biden Administration, and for fiscal year end 2008, the year before the start of the Barack Obama/Joe Biden Administration.

							Average	Average
			Annual	Audited	Audited	Audited	Annual	Annual
			Audited	Pretax	Pretax	Pretax	% Change	% Change
			Fincl	Income	Income	Income	During	During
			Sts	(Loss)	(Loss)	(Loss)	Trump-	Obama-
Michigan Companies	City	State	2019	FYE	FYE	FYE	Pence	Biden
Stock Market Caps Above $1 Bil	HQs	HQs	FYE	2019	2016	2008	3 Years	8 Years
				$ mils	$ mils	$ mils	2017-19	2009-16
Motor Vehicle and Parts Cos
General Motors	Detroit	MI	Dec 19	7,436	12,008	(29,471)	-13%	NM
BorgWarner	Auburn Hills	MI	Dec 19	1,265	943	14	11%	829%
Aptiv plc	Troy	MI	Dec 19	1,126	1,000	(1,850)	4%	NM
Lear Corp	Southfield	MI	Dec 19	954	1,338	(541)	-10%	NM
Gentex	Zeeland	MI	Dec 19	500	511	92	-1%	57%
Meritor	Troy	MI	Sept 19	377	155	115	48%	4%
WABCO Holdings	Auburn Hills	MI	Dec 19	313	369	254	-5%	6%
Visteon	Van Buren Township	MI	Dec 19	106	161	(531)	-11%	NM
Gentherm	Northville	MI	Dec 19	59	111	6	-16%	219%
Ford Motor	Dearborn	MI	Dec 19	(640)	6,784	(14,895)	-36%	NM
Total all 10 Motor Vehicle and Parts Cos				11,496	23,380	(46,807)	-17%	19%
Cos in all Other Sectors
Stryker	Kalamazoo	MI	Dec 19	2,562	1,921	1,580	11%	3%
Ally Financial	Detroit	MI	Dec 19	1,967	1,581	4,737	8%	-8%
Whirlpool	Benton Harbor	MI	Dec 19	1,552	1,114	246	13%	44%
DTE Energy	Detroit	MI	Dec 19	1,324	1,105	819	7%	4%
Kellogg	Battle Creek	MI	Dec 19	1,305	934	1,631	13%	-5%
Masco	Livonia	MI	Dec 19	914	832	(193)	3%	NM
Credit Acceptance Corp	Southfield	MI	Dec 19	856	531	107	20%	50%
CMS Energy	Jackson	MI	Dec 19	829	826	440	0%	11%
Penske Automotive Group	Bloomfield Hills	MI	Dec 19	592	508	(517)	6%	NM
Domino's Pizza	Ann Arbor	MI	Dec 19	483	345	83	13%	39%
Chemical Financial (Now TCF Financial)	Detroit	MI	Dec 19	357	150	28	46%	54%
Taubman Centers	Bloomfield Hills	MI	Dec 19	337	190	(7)	26%	NM
Flagstar	Troy	MI	Dec 19	266	258	(423)	1%	NM
Universal Forest Products	Grand Rapids	MI	Dec 19	241	161	7	17%	275%
Herman Miller	Zeeland	MI	May 20	(13)	178	99	-36%	10%
Sun Communities	Southfield	MI	Dec 19	178	32	(28)	152%	NM
Perrigo Co plc	Allegan	MI	Dec 19	171	(4,848)	178	NM	-353%
Steelcase	Grand Rapids	MI	Feb 20	245	196	(9)	8%	NM
Wolverine World Wide	Rockford	MI	Dec 19	146	111	141	11%	-3%
La-Z-Boy	Monroe	MI	Apr 20	115	131	(96)	-4%	NM
Agree Realty	Bloomfield Hills	MI	Dec 19	81	46	14	25%	29%
TriMas	Bloomfield Hills	MI	Dec 19	78	(58)	(124)	NM	NM
Neogen	Lansing	MI	May 20	72	67	22	2%	26%
Dow Inc / Dow Chemical	Midland	MI	Dec 19	(1,247)	4,413	1,277	-43%	31%
Total 24 Cos in all Other Sectors				13,411	10,724	10,012	8%	1%
Total all 34 Michigan Companies				24,907	34,104	(36,795)	-9%	24%