From: Measuring aggregate trade costs and its empirical effects on manufacturing export composition in China
Year
2000
2001
2002
2003
2004
2005
2006
Trade cost
1.084
1.070
1.036
0.981
0.943
0.916
0.912
2007
2008
2009
2010
2011
2012
2013
0.914
0.935
0.973
0.925
0.911
0.920
0.909