Table 1. The trend of total number of bids and total bid amount by standard period

Division	2003	2005	2010	2015	Increase and decrease compared to 2003	Increaseand decrease rate compared to 2003(%)
Landscaping management	224(22)	371(32)	810(77)	1,317(18)	1,093	487.9
	37,424	44,164	100,218	145,787	108,363	289.6
Joint contract in other fields	4(1)	9(6)	35(28)	23(-)	19	475.0
	352	1,359	5,094	36,493	36,141	10,267.3
Total	228(23)	380(38)	845(105)	1,340(18)	1,112	487.7
	37,776	45,523	105,312	182,280	144,504	382.5