2011 - 15.3%

The 2011 15.3% is the baseline measurement.

2012 - 17.7%

The 2012 increase to 17.7% from 2011 represents a 2.4% increase YoY.

2013 - 19%

The 2013 increase to 19% from 2012 represents a 1.3% increase YoY.

2014 - 13.9%

The 2014 decrease to 13.9% from 2013 represents a -5.1% decrease YoY.

2015 - 12.1%

The 2015 decrease to 12.1% from 2014 represents a -1.8% decrease YoY.

2016 - 12.8%

The 2016 increase to 12.8% from 2015 represents a 0.7% increase YoY.

2017 - 9.7%

The 2017 decrease to 9.7% from 2016 represents a -3.1% decrease YoY.

2018 - 11.5%

The 2018 increase to 11.5% from 2017 represents a 1.8% increase YoY.

2019 - 11.6%

The 2019 increase to 11.6% from 2018 represents a 0.1% increase YoY.

2021 - 10.4%

The 2021 decrease to 10.4% from 2019 represents a -1.2% decrease YoY.

2022 - 10.5%

The 2022 increase to 10.5% from 2021 represents a 0.1% increase YoY.

2023 - 6.4%

The 2023 decrease to 6.4% from 2022 represents a -4.1% decrease YoY.