Dear friends, 
I have encountered a problem. I study the pension balance of China. It needs estimation of shocks of macroeconomic. I used the SW(2007) model to estimate the structure parameters. I use the China’s macroeconomic data (annual), but I get the same parameters as SW(2007). And I used the data processing method is same as SW(2007). I don’t know where the problem came from. 
Thanks in advance!
			
		