Year	Percent
1950	9.93895
1955	8.35583
1960	6.70664
1965	8.89581
1970	9.57063
1975	7.81725
1980	7.25829
1985	7.14118
1990	7.42622
1995	7.68413
2000	6.82648
2005	6.90642
2010	6.23382
2015	5.77178
2020	5.68648
2025	5.33146
2030	5.25113
2035	5.2575
2040	5.22839
2045	5.14855
2050	5.05819
2055	4.98945
2060	4.95057
2065	4.9669
2070	4.99745
2075	4.99859
2080	4.97789
2085	4.94557
2090	4.92918
2095	4.93051
2100	4.93535