2%
Operational Standard
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| 2009 | 0.3835616% | 0.2832861% | 0.2180549% | |||||||||
| 2010 | 1.1976048% | 0.1540832% | 0.2012410% | 0.2795378% | 0.2963841% | 0.3633847% | 0.2577763% | 0.6125023% | 0.4586405% | 0.2371675% | 0.2742820% | 0.3399433% |
| 2011 | 0.7258687% | 0.1864091% | 0.2000858% | 0.2344877% | 0.4249755% | 0.3111572% | 0.1476862% | 0.2307337% | 0.3006615% | 0.3685504% | 0.2283431% | 0.1232177% |
| 2012 | 0.5002084% | 0.2960770% | 0.2648227% | 0.2304527% | 0.3763066% | 0.5327118% | 0.2003699% | 0.2195229% | 0.2874022% | 0.2106927% | 0.4029937% | 0.3390469% |
| 2013 | 0.6925550% | 0.2724405% | 0.2034588% | 0.3208868% | 0.2847786% | 0.2721088% | 0.1835584% | 0.1792115% | 0.4000572% | 0.2013085% | 0.2310136% | 0.2157318% |
| 2014 | 0.6078288% | 0.2711961% | 0.1562500% | 0.1986661% | 0.3660941% | 0.2784291% | 0.2432104% | 0.3605016% | 0.4350877% | 0.3929273% | 0.3761166% | 0.2826738% |
| 2015 | 0.9477425% | 0.3376395% | 0.2619245% | 0.3405389% | 0.4383313% | 0.3751842% | 0.3197442% | 0.4518072% | 0.5528413% | 0.2510355% | 0.4650527% | 0.4689332% |
| 2016 | 1.4993070% | 0.4048037% | 0.4865220% | 0.8190118% | 0.4878710% | 0.5686326% | 0.6106023% | 0.6510240% | 0.8072783% | 0.6643635% | 0.4930966% | 0.4624946% |
| 2017 | 1.1170529% | 0.6609749% | 0.7600048% | 0.5888734% | 0.7081039% | 0.6722476% | 0.4394141% | 0.5788526% | 0.8344549% | 0.4528662% | 0.4545455% |