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 | 0.8500 | 0.8035 |
2002 | 0.7525 | 0.6135 |
2007 | 0.7721 | 0.8842 |
2010 | 0.8978 | 0.9275 |