2011 - 15.3%

The 2011 15.3% is the baseline measurement.

2012 - 13.7%

The 2012 decrease to 13.7% from 2011 represents a -1.6% decrease YoY.

2013 - 15.3%

The 2013 increase to 15.3% from 2012 represents a 1.6% increase YoY.

2014 - 14.8%

The 2014 decrease to 14.8% from 2013 represents a -0.5% decrease YoY.

2015 - 14.9%

The 2015 increase to 14.9% from 2014 represents a 0.1% increase YoY.

2016 - 10.6%

The 2016 decrease to 10.6% from 2015 represents a -4.3% decrease YoY.

2017 - 12.1%

The 2017 increase to 12.1% from 2016 represents a 1.5% increase YoY.

2018 - 13.1%

The 2018 increase to 13.1% from 2017 represents a 1.0% increase YoY.

2019 - 11.9%

The 2019 decrease to 11.9% from 2018 represents a -1.2% decrease YoY.

2021 - 13.6%

The 2021 increase to 13.6% from 2019 represents a 1.7% increase YoY.

2022 - 12.2%

The 2022 decrease to 12.2% from 2021 represents a -1.4% decrease YoY.

2023 - 13.5%

The 2023 increase to 13.5% from 2022 represents a 1.3% increase YoY.