2011 - 19.1%

The 2011 19.1% is the baseline measurement.

2012 - 23.5%

The 2012 increase to 23.5% from 2011 represents a 4.4% increase YoY.

2013 - 18.3%

The 2013 decrease to 18.3% from 2012 represents a -5.2% decrease YoY.

2014 - 21.2%

The 2014 increase to 21.2% from 2013 represents a 2.9% increase YoY.

2015 - 19.5%

The 2015 decrease to 19.5% from 2014 represents a -1.7% decrease YoY.

2016 - 21.8%

The 2016 increase to 21.8% from 2015 represents a 2.3% increase YoY.

2017 - 18.9%

The 2017 decrease to 18.9% from 2016 represents a -2.9% decrease YoY.

2018 - 20.5%

The 2018 increase to 20.5% from 2017 represents a 1.6% increase YoY.

2019 - 21.3%

The 2019 increase to 21.3% from 2018 represents a 0.8% increase YoY.

2021 - 18.3%

The 2021 decrease to 18.3% from 2019 represents a -3.0% decrease YoY.

2022 - 16.8%

The 2022 decrease to 16.8% from 2021 represents a -1.5% decrease YoY.

2023 - 17.6%

The 2023 increase to 17.6% from 2022 represents a 0.8% increase YoY.