Membership
- Membership Trend
-
-
- 1985 year
- 135,259 total
-
- 1995 year
- 199,516 total
-
- 2005 year
- 216,510 total
-
- 2010 year
- 230,009 total
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- 2015 year
- 254,187 total
-
- 2016 year
- 261,721 total
-
- 2017 year
- 269,408 total
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- 2018 year
- 279,833 total
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