Trade

World 1960-2014
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    lnexport |       Coef.   Std. Err.       t     P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
      lngdp |   1.238803***   .0087969   140.82   0.000     1.221159     1.256448
-------------------------------------------------
      _cons |   -8.880468   .2660294   -33.38   0.000     -9.414055     -8.34688

60-89
  lnexport |       Coef.   Std. Err.       t     P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
      lngdp |   1.228819   .0166871     73.64   0.000     1.194637     1.263001
      _cons |   -8.580595   .4887602   -17.56   0.000     -9.581774   -7.579415
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90-2007
lnexport |       Coef.   Std. Err.       t     P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
      lngdp |   1.531808   .0246177     62.22   0.000     1.479621     1.583995
      _cons |   -18.03857   .7665296   -23.53   0.000     -19.66354     -16.4136
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2008-2014
-----------------------------------------------------------------------------
    lnexport |       Coef.   Std. Err.       t     P>|t|     [95% Conf. Interval]
-------------+----------------------------------------------------------------
      lngdp |   1.362952   .1912252     7.13   0.001     .8713925     1.854512
-------------------------------------------------
      _cons |   -12.77971   6.094863     -2.10   0.090     -28.44705     2.887634

EU
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    lnexport |       Coef.   Std. Err.       t     P>|t|     [95% Conf....