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RE: st: Re: st: RE: st: RE: cumulative sum with depreciation


From   Anna Gueorguieva <anna_i_g@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   RE: st: Re: st: RE: st: RE: cumulative sum with depreciation
Date   Wed, 7 Jun 2006 07:28:23 -0700 (PDT)

Dear Austin,
Thank you so much!  I used the first method of
identifying missing and sorting them out to the end. 

For the purpose of aiding future searches, I am doing
a total factor productivity (TFP) growth excercise and
calculating the capital stock using the perpetual
inventory method. 

Here's my code:
*PARAMETERS
gen ky0=1		/* range 1 to 2*/
gen delta=.06 /*range .04 to .08*/


*REAL GDP
gen Y=rgdpl*pop

*INVESTMENT
ren ki I

*CAPITAL
g miss=mi(Y) 
bysort code miss (year): gen K = Y[1] *ky0
by code: replace K=(1-delta)*K[_n-1]+I if _n>1 

The result is:
     +----------------------------------------------+
     | code   year          K          Y          I |
     |----------------------------------------------|
  1. |  ALB   1990          .          .          . |
  2. |  ALB   1991    7252145    7252145   5.277578 |
  3. |  ALB   1992    6817020    7269795   3.772736 |
  4. |  ALB   1993    6408010    7745880   10.85033 |
  5. |  ALB   1994    6023543    8463700   14.01817 |
     |----------------------------------------------|
  6. |  ALB   1995    5662144    9114887   12.99762 |
  7. |  ALB   1996    5322426   1.00e+07   10.65489 |
  8. |  ALB   1997    5003091    9227298   11.00514 |
  9. |  ALB   1998    4702917    9688186   11.68663 |
 10. |  ALB   1999    4420754   1.10e+07   11.80726 |
     |----------------------------------------------|
 11. |  ALB   2000    4155522   1.14e+07   13.42595 |


Thank you once again for your time and prompt
response.
Best,
Anna





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