| wig | oig | pig | Tig |
| wig | oig | pig | Tig |
2002 | −2.519 (4.100) | 1.071*** (0.252) | −7.025* (4.155) | −8.121*** (3.727) | 2010 | −4.102** (0.751) | 1.373*** (0.052) | −4.799** (2.252) | −18.201*** (1.237) |
2003 | −2.173 (0.629) | 1.089 (0.046) | −5.984*** (2.213) | −7.247 (1.179) | 2011 | −4.835*** (0.781) | 1.425*** (0.054) | −4.144* (2.262) | −18.829*** (1.252) |
2004 | −1.845 (0.635) | 1.101 (0.046) | −5.553** (2.215) | −11.267*** (1.181) | 2012 | −5.092*** (0.814) | 1.461*** (0.056) | −4.272* (2.274) | −18.875*** (1.269) |
2005 | −2.649 (0.650) | 1.187** (0.047) | −5.461** (2.219) | −11.16** (1.188) | 2013 | −5.587*** (0.841) | 1.529*** (0.057) | −1.945 (2.284) | −19.619*** (1.284) |
2006 | −2.844 (0.662) | 1.224*** (0.047) | −5.254** (2.222) | −13.432*** (1.194) | 2014 | −5.879*** (0.870) | 1.499*** (0.059) | 4.892** (2.295) | −22.070*** (1.299) |
2007 | −2.945 (0.679) | 1.202*** (0.048) | −4.772** (2.228) | −15.152*** (1.201) | 2015 | −5.891*** (0.902) | 1.457*** (0.060) | 4.060* (2.308) | −21.234*** (1.318) |
2008 | −3.551 (0.697) | 1.353*** (0.049) | −4.932** (2.234) | −16.976*** (1.210) | 2016 | −5.980*** (0.937) | 1.465*** (0.625) | 4.369* (2.322) | −21.562*** (1.338) |
2009 | −3.587 (0.715) | 1.389*** (0.050) | −4.922** (2.240) | −18.188*** (1.219) |
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