Year | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 |
---|---|---|---|---|---|---|---|---|---|
THE | 0.51 (0.42–0.60) | 0.52 (0.44–0.60) | 0.49 (0.41–0.58) | 0.50 (0.42–0.58) | 0.52 (0.43–0.60) | 0.53 (0.44–0.62) | 0.53 (0.45–0.62) | 0.48 (0.41–0.56) | 0.54 (0.46–0.62) |
 Public | 0.50 (0.40–0.59) | 0.48 (0.39–0.58) | 0.49 (0.39–0.58) | 0.48 (0.39–0.58) | 0.48 (0.38–0.58) | 0.52 (0.43–0.61) | 0.51 (0.41–0.60) | 0.52 (0.44–0.67) | 0.48 (0.38–0.57) |
  MSU | 0.33 (0.25–0.41) | 0.33 (0.25–0.1) | 0.33 (0.25–0.41) | 0.32 (0.25–0.40) | 0.32 (0.25–0.40) | 0.44 (0.34–0.55) | 0.31 (0.24–0.37) | 0.41 (0.35–0.47) | 0.34 (0.25–0.43) |
  HIO | 0.42 (0.34–0.50) | 0.39 (0.32–0.47) | 0.40 (0.33–0.47) | 0.41 (0.34–0.48) | 0.41 (0.34–0.48) | 0.43 (0.35–0.50) | 0.41 (0.34–0.48) | 0.41 (0.34–0.48) | 0.40 (0.33–0.47) |
  SSIO | 0.55 (0.48–0.63) | 0.55 (0.47–0.62) | 0.55 (0.47–0.63) | 0.56 (0.48–0.63) | 0.54 (0.46–0.62) | 0.54 (0.46–0.62) | 0.54 (0.46–0.62) | 0.57 (0.50–0.65) | 0.48 (0.39–0.56) |
 Private | 0.52 (0.43–0.61) | 0.55 (0.48–0.63) | 0.50 (0.41–0.59) | 0.53 (0.45–0.60) | 0.55 (0.48–0.62) | 0.53 (0.45–0.62) | 0.56 (0.49–0.64) | 0.52 (0.37–0.67) | 0.59 (0.53–0.66) |
  OOP | 0.5 (0.41–0.60) | 0.54 (0.46–0.62) | 0.47 (0.38–0.57) | 0.49 (0.42–0.57) | 0.53 (0.45–0.61) | 0.51 (0.42–0.61) | 0.55 (0.47–0.63) | 0.61 (0.39–0.82) | 0.59 (0.51–0.66) |