| wig | oig | pig | Tig |
| wig | oig | pig | Tig |
2002 | 0.019*** (0.004) | −0.116** (0.053) | −0.001 (0.001) | 0.009*** (0.002) | 2010 | 0.387*** (0.063) | 0.252*** (0.112) | 0.367*** (0.060) | 0.377*** (0.061) |
2003 | 0.126** (0.054) | −0.009** (0.103) | 0.106** (0.051) | 0.116** (0.052) | 2011 | 0.320*** (0.066) | 0.185*** (0.115) | 0.300*** (0.063) | 0.310*** (0.064) |
2004 | 0.150*** (0.054) | 0.015*** (0.103) | 0.130*** (0.051) | 0.140*** (0.052) | 2012 | 0.298*** (0.067) | 0.163*** (0.116) | 0.278*** (0.064) | 0.288*** (0.065) |
2005 | 0.240*** (0.055) | 0.105*** (0.104) | 0.220*** (0.052) | 0.230*** (0.053) | 2013 | 0.220*** (0.070) | 0.085*** (0.119) | 0.200*** (0.067) | 0.210*** (0.068) |
2006 | 0.374*** (0.056) | 0.239*** (0.105) | 0.354*** (0.053) | 0.364*** (0.054) | 2014 | 0.007 (0.072) | −0.065 (0.121) | 0.050 (0.069) | 0.060 (0.070) |
2007 | 0.429*** (0.057) | 0.294*** (0.106) | 0.409*** (0.054) | 0.419*** (0.055) | 2015 | 0.047 (0.071) | −0.088 (0.120) | 0.027 (0.068) | 0.037 (0.069) |
2008 | 0.424*** (0.057) | 0.289*** (0.106) | 0.404*** (0.054) | 0.414*** (0.055) | 2016 | 0.044 (0.072) | −0.091 (0.121) | 0.024 (0.069) | 0.034 (0.070) |
2009 | 0.477*** (0.063) | 0.342*** (0.112) | 0.457*** (0.060) | 0.467*** (0.061) |
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