2011 - 19.9%

The 2011 19.9% is the baseline measurement.

2012 - 16.5%

The 2012 decrease to 16.5% from 2011 represents a -3.4% decrease YoY.

2013 - 19.3%

The 2013 increase to 19.3% from 2012 represents a 2.8% increase YoY.

2014 - 20.5%

The 2014 increase to 20.5% from 2013 represents a 1.2% increase YoY.

2015 - 20.8%

The 2015 increase to 20.8% from 2014 represents a 0.3% increase YoY.

2016 - 17.4%

The 2016 decrease to 17.4% from 2015 represents a -3.4% decrease YoY.

2017 - 17.6%

The 2017 increase to 17.6% from 2016 represents a 0.2% increase YoY.

2018 - 13.6%

The 2018 decrease to 13.6% from 2017 represents a -4.0% decrease YoY.

2019 - 17.9%

The 2019 increase to 17.9% from 2018 represents a 4.3% increase YoY.

2021 - 15.7%

The 2021 decrease to 15.7% from 2019 represents a -2.2% decrease YoY.

2022 - 17.3%

The 2022 increase to 17.3% from 2021 represents a 1.6% increase YoY.

2023 - 19.8%

The 2023 increase to 19.8% from 2022 represents a 2.5% increase YoY.