Please Help With Liquidity Ratios for Pfizer 2016 - 2019. Thanks much.

What is the change in the liquidity ratios from 2016 - 2017, 2017-2018, 2018-2019?

	2019	2018	2017	2016
Current Assets	32,803	49,926	41,141	38,949
Total Quick Assets	18,554	26,858	28,213	26,075
Total Cash Assets	9,830	18,833	19,992	17,850
Current Liabilities	37,304	31,858	30,427	31,115
Ratio Analysis:	2019	2018	2017	2016
Current Ratio: Current Assets /Current Liabilities	0.88	1.57	1.35	1.25
Quick Ratio: Total Quick Assets/ Current Liabilities	0.50	0.84	0.93	0.84
Cash Ratio: Total Cash Assets /Current Liabilities	0.26	0.59	0.66	0.57
NWC to Total Assets:	(0.03)	0.12	0.07	0.05
Internal Measures:	317	472	390	363