The line chart delineates the number of workers in the motor-vehicle manufacture within four US states over two decades, from 1990 to 2010.
Overall, the data reveals a contrasting trends among different states, a stark decline was observed in Michigan and Ohio, while Indiana and Alabama experienced a growth throughout the years.
Beginning with Michigan, the data featured a prominent number, accounting for an impressive 100,000 workers in 1990, yet the number went fluctuating in the subsequent years, before dropping sharply to 28,000 by 2009, and levelling off in the final examined year. Ohio also mirrored this ascent, initiating from 39.000 and then fluctuating yet less dynamic trend, which recorded at 18.000 employees in 2009, and rose marginally to 19.0000 in the final year.
Conversely, Alabama emerged from not even a single worker in the early examined periods, before started garnering to 2,000 in 1997, subsequently surged at 7,000 participations as by 2007, and slightly decreased to 6,000 in 2010. Additionally, Indiana commenced from 5,000 engagements and experienced a gradual increase, and peaked at 7,000 and finally reached back to 7,000 in the final year. This dynamic reveals data related to a various vacancy of motor vehicle factory within each city.