2011 - 16.4%

The 2011 16.4% is the baseline measurement.

2012 - 18.1%

The 2012 increase to 18.1% from 2011 represents a 1.7% increase YoY.

2013 - 20.8%

The 2013 increase to 20.8% from 2012 represents a 2.7% increase YoY.

2014 - 17.2%

The 2014 decrease to 17.2% from 2013 represents a -3.6% decrease YoY.

2015 - 13.1%

The 2015 decrease to 13.1% from 2014 represents a -4.1% decrease YoY.

2016 - 20.2%

The 2016 increase to 20.2% from 2015 represents a 7.1% increase YoY.

2017 - 14.5%

The 2017 decrease to 14.5% from 2016 represents a -5.7% decrease YoY.

2018 - 13.4%

The 2018 decrease to 13.4% from 2017 represents a -1.1% decrease YoY.

2019 - 15.7%

The 2019 increase to 15.7% from 2018 represents a 2.3% increase YoY.

2021 - 18.7%

The 2021 increase to 18.7% from 2019 represents a 3.0% increase YoY.

2022 - 13.8%

The 2022 decrease to 13.8% from 2021 represents a -4.9% decrease YoY.

2023 - 15.6%

The 2023 increase to 15.6% from 2022 represents a 1.8% increase YoY.