Year	Percent
1950	7.17608
1955	8.41605
1960	8.82
1965	7.51418
1970	7.21634
1975	7.52229
1980	7.31247
1985	6.86381
1990	5.92004
1995	5.05872
2000	5.4597
2005	6.19484
2010	5.97227
2015	5.64484
2020	5.61817
2025	4.94093
2030	5.06596
2035	5.3432
2040	5.48268
2045	5.42755
2050	5.28297
2055	5.14278
2060	5.11434
2065	5.19597
2070	5.27372
2075	5.26121
2080	5.168
2085	5.06215
2090	5.00864
2095	5.01075
2100	5.02858