Year Month Week
2007 20% 12%
2008 21% 13%
2009 27% 17%
2010 27% 17%
2011 34% 22%
2012 39% 29%
2013 45% 33%
2014 47% 36%
2015 53% 44%
2016 57% 50%
2017 61% 53%
2018 64% 57%
2019 67% 60%
2020 68% 60%
2021 68% 62%