Year	Percent
1950	8.96868
1955	7.99107
1960	6.75221
1965	8.24583
1970	8.43694
1975	7.75723
1980	7.18016
1985	6.46884
1990	6.63301
1995	6.46632
2000	6.43924
2005	6.10317
2010	5.25172
2015	5.35918
2020	4.62505
2025	5.04804
2030	4.87883
2035	4.59548
2040	4.41248
2045	4.34958
2050	4.35095
2055	4.44108
2060	4.54885
2065	4.56009
2070	4.49901
2075	4.46698
2080	4.49439
2085	4.56339
2090	4.63916
2095	4.67685
2100	4.65799