Variables

Estimated coefficient (standard error)


Constant

0.86 (0.05)^{a}

Constant*Dummy_{1984–2001}

0.75 (0.07)^{a}

Constant*Dummy_{2002–2006}

1.05 (0.12)^{a}

Constant*Dummy_{2007–2013}

1.61 (0.10)^{a}

Adjusted Rsquared

0.8622

 Note: ^{a}means significant at 1 %