2011 - 13.6%

The 2011 13.6% is the baseline measurement.

2012 - 12.8%

The 2012 decrease to 12.8% from 2011 represents a -0.8% decrease YoY.

2013 - 13.8%

The 2013 increase to 13.8% from 2012 represents a 1.0% increase YoY.

2014 - 13.3%

The 2014 decrease to 13.3% from 2013 represents a -0.5% decrease YoY.

2015 - 12.3%

The 2015 decrease to 12.3% from 2014 represents a -1.0% decrease YoY.

2016 - 11.6%

The 2016 decrease to 11.6% from 2015 represents a -0.7% decrease YoY.

2017 - 11.2%

The 2017 decrease to 11.2% from 2016 represents a -0.4% decrease YoY.

2018 - 11.8%

The 2018 increase to 11.8% from 2017 represents a 0.6% increase YoY.

2019 - 10.8%

The 2019 decrease to 10.8% from 2018 represents a -1.0% decrease YoY.

2021 - 11.5%

The 2021 increase to 11.5% from 2019 represents a 0.7% increase YoY.

2022 - 11.4%

The 2022 decrease to 11.4% from 2021 represents a -0.1% decrease YoY.

2023 - 11.7%

The 2023 increase to 11.7% from 2022 represents a 0.3% increase YoY.