2011 - 11.5%

The 2011 11.5% is the baseline measurement.

2012 - 15.2%

The 2012 increase to 15.2% from 2011 represents a 3.7% increase YoY.

2013 - 13.3%

The 2013 decrease to 13.3% from 2012 represents a -1.9% decrease YoY.

2014 - 13.1%

The 2014 decrease to 13.1% from 2013 represents a -0.2% decrease YoY.

2015 - 12.5%

The 2015 decrease to 12.5% from 2014 represents a -0.6% decrease YoY.

2016 - 12.7%

The 2016 increase to 12.7% from 2015 represents a 0.2% increase YoY.

2017 - 11.6%

The 2017 decrease to 11.6% from 2016 represents a -1.1% decrease YoY.

2018 - 13%

The 2018 increase to 13% from 2017 represents a 1.4% increase YoY.

2019 - 11.5%

The 2019 decrease to 11.5% from 2018 represents a -1.5% decrease YoY.

2021 - 12.8%

The 2021 increase to 12.8% from 2019 represents a 1.3% increase YoY.

2022 - 11.8%

The 2022 decrease to 11.8% from 2021 represents a -1.0% decrease YoY.

2023 - 14.8%

The 2023 increase to 14.8% from 2022 represents a 3.0% increase YoY.