From: A study on the dynamic comparison of logistics industry’s correlation effects in China
Year | Transportation industry, warehouse industry, and post industry | Post industry |
---|---|---|
1997 | 0.4343 | 0.4253 |
2002 | 0.5160 | 0.6005 |
2007 | 0.5387 | 0.5095 |
2010 | 0.6053 | 0.6146 |