2011 - 17.3%

The 2011 17.3% is the baseline measurement.

2012 - 19.2%

The 2012 increase to 19.2% from 2011 represents a 1.9% increase YoY.

2013 - 17.9%

The 2013 decrease to 17.9% from 2012 represents a -1.3% decrease YoY.

2014 - 20.4%

The 2014 increase to 20.4% from 2013 represents a 2.5% increase YoY.

2015 - 18.1%

The 2015 decrease to 18.1% from 2014 represents a -2.3% decrease YoY.

2016 - 20%

The 2016 increase to 20% from 2015 represents a 1.9% increase YoY.

2017 - 16.7%

The 2017 decrease to 16.7% from 2016 represents a -3.3% decrease YoY.

2018 - 16.4%

The 2018 decrease to 16.4% from 2017 represents a -0.3% decrease YoY.

2019 - 20.5%

The 2019 increase to 20.5% from 2018 represents a 4.1% increase YoY.

2021 - 19.6%

The 2021 decrease to 19.6% from 2019 represents a -0.9% decrease YoY.

2022 - 17.5%

The 2022 decrease to 17.5% from 2021 represents a -2.1% decrease YoY.

2023 - 16.7%

The 2023 decrease to 16.7% from 2022 represents a -0.8% decrease YoY.