2011 - 13.2%

The 2011 13.2% is the baseline measurement.

2012 - 12.1%

The 2012 decrease to 12.1% from 2011 represents a -1.1% decrease YoY.

2013 - 10.7%

The 2013 decrease to 10.7% from 2012 represents a -1.4% decrease YoY.

2014 - 10.6%

The 2014 decrease to 10.6% from 2013 represents a -0.1% decrease YoY.

2015 - 11.1%

The 2015 increase to 11.1% from 2014 represents a 0.5% increase YoY.

2016 - 10.8%

The 2016 decrease to 10.8% from 2015 represents a -0.3% decrease YoY.

2017 - 9.2%

The 2017 decrease to 9.2% from 2016 represents a -1.6% decrease YoY.

2018 - 8.4%

The 2018 decrease to 8.4% from 2017 represents a -0.8% decrease YoY.

2019 - 8.2%

The 2019 decrease to 8.2% from 2018 represents a -0.2% decrease YoY.

2021 - 8.5%

The 2021 increase to 8.5% from 2019 represents a 0.3% increase YoY.

2022 - 7.8%

The 2022 decrease to 7.8% from 2021 represents a -0.7% decrease YoY.

2023 - 8.2%

The 2023 increase to 8.2% from 2022 represents a 0.4% increase YoY.