Year	Percent
1950	9.35592
1955	10.07632
1960	5.79385
1965	6.76583
1970	9.08908
1975	10.56215
1980	10.89674
1985	9.61272
1990	9.24128
1995	9.46941
2000	10.32607
2005	11.39678
2010	10.81765
2015	8.48829
2020	7.17444
2025	8.46418
2030	10.00928
2035	9.06909
2040	8.04398
2045	7.34671
2050	7.21662
2055	7.32563
2060	7.30999
2065	7.06714
2070	6.67504
2075	6.31665
2080	6.10981
2085	6.02572
2090	5.95436
2095	5.82582
2100	5.64765