Year	Percent
1950	8.19171
1955	8.72838
1960	9.95159
1965	10.38656
1970	10.68543
1975	10.12964
1980	8.06145
1985	7.11738
1990	6.78457
1995	6.81368
2000	6.69586
2005	6.57423
2010	5.66999
2015	5.15071
2020	5.47049
2025	5.4175
2030	5.34651
2035	5.23643
2040	5.11712
2045	5.00415
2050	5.00996
2055	5.08625
2060	5.14152
2065	5.13967
2070	5.09324
2075	5.04319
2080	5.01492
2085	5.01673
2090	5.0202
2095	5.00799
2100	4.96792