| Period | Value | YoY Chg | Change % | Date | Report | Filed |
|---|---|---|---|---|---|---|
| Q3 2023 | 30.9M | +112K | +0.36% | 30 Sep 2023 | 10-Q | 14 Nov 2023 |
| Q2 2023 | 30.9M | +122K | +0.4% | 30 Jun 2023 | 10-Q | 09 Aug 2023 |
| Q1 2023 | 30.9M | +129K | +0.42% | 31 Mar 2023 | 10-Q | 10 May 2023 |
| Q4 2022 | 30.8M | +136K | +0.44% | 31 Dec 2022 | 10-Q | 14 Nov 2023 |
| Q3 2022 | 30.8M | +103K | +0.34% | 30 Sep 2022 | 10-Q | 09 Nov 2022 |
| Q2 2022 | 30.8M | +173K | +0.57% | 30 Jun 2022 | 10-Q | 09 Aug 2022 |
| Q1 2022 | 30.7M | +163K | +0.53% | 31 Mar 2022 | 10-Q | 10 May 2022 |
| Q4 2021 | 30.7M | +168K | +0.55% | 31 Dec 2021 | 10-K | 15 Mar 2023 |
| Q3 2021 | 30.7M | +158K | +0.52% | 30 Sep 2021 | 10-Q | 09 Nov 2021 |
| Q2 2021 | 30.6M | +74.7K | +0.25% | 30 Jun 2021 | 10-Q | 09 Aug 2021 |
| Q1 2021 | 30.6M | +83.3K | +0.27% | 31 Mar 2021 | 10-Q | 17 May 2021 |
| Q4 2020 | 30.5M | +23.3K | +0.08% | 31 Dec 2020 | 10-K | 10 Mar 2022 |
| Q3 2020 | 30.5M | +35.6K | +0.12% | 30 Sep 2020 | 10-Q | 09 Nov 2020 |
| Q2 2020 | 30.5M | -21.9K | -0.07% | 30 Jun 2020 | 10-Q | 07 Aug 2020 |
| Q1 2020 | 30.5M | -47.8K | -0.16% | 31 Mar 2020 | 10-Q | 11 May 2020 |
| Q4 2019 | 30.5M | -75.7K | -0.25% | 31 Dec 2019 | 10-K | 27 Apr 2021 |
| Q3 2019 | 30.5M | -1.01M | -3.21% | 30 Sep 2019 | 10-Q | 12 Nov 2019 |
| Q2 2019 | 30.5M | -944K | -3% | 30 Jun 2019 | 10-Q | 09 Aug 2019 |
| Q1 2019 | 30.5M | -935K | -2.97% | 31 Mar 2019 | 10-Q | 10 May 2019 |
| Q4 2018 | 30.6M | -909K | -2.89% | 31 Dec 2018 | 10-K | 02 Mar 2020 |
| Q3 2018 | 31.5M | +37.4K | +0.12% | 30 Sep 2018 | 10-Q | 09 Nov 2018 |
| Q2 2018 | 31.5M | +30K | +0.1% | 30 Jun 2018 | 10-Q | 09 Aug 2018 |
| Q1 2018 | 31.5M | -65.4K | -0.21% | 31 Mar 2018 | 10-Q | 10 May 2018 |
| Q4 2017 | 31.5M | -617K | -1.92% | 31 Dec 2017 | 10-K | 01 Mar 2019 |
| Q3 2017 | 31.5M | -919K | -2.84% | 30 Sep 2017 | 10-Q | 09 Nov 2017 |
| Q2 2017 | 31.4M | -1.01M | -3.11% | 30 Jun 2017 | 10-Q | 09 Aug 2017 |
| Q1 2017 | 31.5M | -1.45M | -4.41% | 31 Mar 2017 | 10-Q | 10 May 2017 |
| Q4 2016 | 32.1M | -1.32M | -3.96% | 31 Dec 2016 | 10-K | 01 Mar 2018 |
| Q3 2016 | 32.4M | -1.4M | -4.16% | 30 Sep 2016 | 10-Q | 09 Nov 2016 |
| Q2 2016 | 32.5M | -2.49M | -7.12% | 30 Jun 2016 | 10-Q | 10 Aug 2016 |
| Q1 2016 | 33M | -2.29M | -6.5% | 31 Mar 2016 | 10-Q | 10 May 2016 |
| Q4 2015 | 33.4M | -2.82M | -7.77% | 31 Dec 2015 | 10-K | 01 Mar 2017 |
| Q3 2015 | 33.8M | -3.4M | -9.16% | 30 Sep 2015 | 10-Q | 09 Nov 2015 |
| Q2 2015 | 34.9M | -3.5M | -9.1% | 30 Jun 2015 | 10-Q | 10 Aug 2015 |
| Q1 2015 | 35.3M | -3.15M | -8.21% | 31 Mar 2015 | 10-Q | 11 May 2015 |
| Q4 2014 | 36.2M | -1.86M | -4.87% | 31 Dec 2014 | 10-K | 29 Feb 2016 |
| Q3 2014 | 37.2M | -838K | -2.2% | 30 Sep 2014 | 10-Q | 10 Nov 2014 |
| Q2 2014 | 38.4M | +1.42M | +3.83% | 30 Jun 2014 | 10-Q | 11 Aug 2014 |
| Q1 2014 | 38.4M | +1.22M | +3.27% | 31 Mar 2014 | 10-Q | 12 May 2014 |
| Q4 2013 | 38.1M | +957K | +2.58% | 31 Dec 2013 | 10-K | 16 Mar 2015 |
| Q3 2013 | 38M | +815K | +2.19% | 30 Sep 2013 | 10-Q | 08 Nov 2013 |
| Q2 2013 | 37M | -415K | -1.11% | 30 Jun 2013 | 10-Q | 09 Aug 2013 |
| Q1 2013 | 37.2M | +713K | +1.95% | 31 Mar 2013 | 10-Q | 10 May 2013 |
| Q4 2012 | 37.1M | +713K | +1.96% | 31 Dec 2012 | 10-K | 17 Mar 2014 |
| Q3 2012 | 37.2M | +679K | +1.86% | 30 Sep 2012 | 10-Q | 09 Nov 2012 |
| Q2 2012 | 37.4M | -1.09M | -2.84% | 30 Jun 2012 | 10-Q | 09 Aug 2012 |
| Q1 2012 | 36.5M | 31 Mar 2012 | 10-Q | 10 May 2012 | ||
| Q4 2011 | 36.4M | +361K | +1% | 31 Dec 2011 | 10-K | 18 Mar 2013 |
| Q3 2011 | 36.5M | 30 Sep 2011 | 10-Q | 09 Nov 2011 | ||
| Q2 2011 | 38.5M | 30 Jun 2011 | 10-Q/A | 26 Aug 2011 | ||
| Q4 2010 | 36.1M | 31 Dec 2010 | 10-K | 15 Mar 2012 |